Cho tam giác ABC , đường cao AH . Gọi M là trung điểm của cạnh BC . Qua M kẻ các đường thẳng song song với AB và AC , chúng cắt các cạnh AC và AB theo thứ tự tại E và D .
a) Cmr : Tứ giác ADME là hình bình hành . Gọi O là giao điểm của AM và DE . Cmr : Tam giác OAH cân .
b) Tứ giác tạo thành từ 4 điểm D , E , M , H là hình gì ? Tại sao ?
c) Tìm điều kiện của tam giác ABC để tứ giác ADME là hình chữ nhật .
Trong trường hợp này hãy xác định vị trí của điểm M trên cạnh BC để độ dài đoạn thẳng DE nhỏ nhất

Change these sentences into reported speech. (2)

1. “Do you live in London?”

She asked me ........................................................................................................

2. “Did he arrive on time?”

She asked me ........................................................................................................

3. “Have you been to Paris?”

She asked me ........................................................................................................

4. “Can you help me?”

She asked me ........................................................................................................

5. “Are you working tonight?”

She asked me ........................................................................................................

6. “What are you going to do at the weekend?”

She asked me ........................................................................................................

7. “Where will you live after graduation?”

She asked me ........................................................................................................

8. “What were you doing when I saw you?”

She asked me ........................................................................................................

9. “How was the journey?”

She asked me ........................................................................................................

10. “How often do you go to the cinema?”

She asked me ........................................................................................................

Giúp mình với

Make question for the underlined parts by using the best option A, B, C or D.

1.These shirts are made of silk

2.The communal house is usually the largest, tallest building in the village.

3. My father goes fishing twice a month

4 The students play happily in the school yard.

MK cần trước 8h

ai nhanh mk tick cho=((

I. Chọn đáp án đúng nhất A, B, C hoặc D hoàn thành các câu sau đây:

1. Have you ................ any news about Lan since her bike accident

A. heard

B. hearing

C. hear

2. We ............... dinner when he arrived yesterday evening.

A. were having

B. is having

C. are having

3. Mai asked her friend ............... shopping

A. goes

B. to go

C. go

4. I have known her .................... two years.

A. with

B. for

C. since

5. Would you mind ........ the window?

A. open

B. opening

C. opened

6. The table ................ of wood is more expensive than plastics

A. makes

B. made

C. make

7. The old car tires are ......... to make pipes and floor coverings

A. reused

B. reduced

C. recycled

8. How many .................. do you celebrate in your country?

A. festivals

B. festival

C. festivanl

Giúp mình với. please!!!!!!!!!! Cảm ơn các bạn

Hãy chuyển những câu sau dạng quá khứ đơn chuyển sang hiện tại hoàn thành.

1. It has been years since we last traveled abroad.

We haven’t

2. I haven’t watched TV for a week.

The last

3. We bought this house two years ago.

We have

4. We have never met him before.

It’s the

5. It started to rain at 2 p.m.

It has

6. When did you start working here?

How long

7. Dave has written a composition for two hours.

Dave started

8. How long have you been learning English?

When

9. Keith started driving a car five years ago.

Keith has

10. This is the first time I have ever eaten this kind of food.

I have

Mark the letter A, B, C or D to indicate the best answer to each of the following questions.

31.  My father doesn’t mind ______ my mom from work every day.

32. Watching TV too much may have harmful effects ______ your eyes and bodies.

33. Among the ______, the Tay people have the largest population.

34. Viet Nam is ______ multicultural country with 54 ethnic groups.

35. They detest ______ early in the morning.

36. Nam helped his parents ______ the rice onto the buffalo-drawn cart.

37.  Viet plays the guitar ______ than Phong does.

38. Today Peter gets up ______ than he did yesterday.

39. Is living in the city _______ than living in the country?

40. You shouldn’t use mobile phones too much because it can be harmful ______ your health.

41. ______ does Hoa Ban festival take place? – In Lai Chau.  

42. It is typical of the cultural life of ______ Thai people.

43. The number of the Odu people only accounts ______ 10% of the population.

44. In the Central Highlands, the biggest and tallest house in the village is the ______ house.

45. When having meals with a British family, you should never chew with your ______ open.

46. You ______ use your mobile phone on the plane.

47. You ______ break you promise to the children.

48. She's always tired. She ______ go to bed late every night.

49. My brother ______ work late tonight. His boss ordered him to stay until 10.00.

50. The Hmong of Sa Pa are called Black Hmong _______ their mainly black clothing.

51. ______ is the most important festival in Vietnam?

52. I prefer having a few close friends ______ having a lot of normal friends.

53. He ______ a long family tradition of serving the military.

54. _____ street food in Hoi An is cheap but delicious.

55. You _______ place your chopsticks on your rice bowl when finished with a meal.

56. People in rural areas live _______ than those in cities.

57. In ethnic tradition, women ______ cloth to make garments for their family members.

58. Shoes must always be removed before ______ a Japanese home.

59. There’s _______ tradition that floor shouldn’t be swept on the first day of Tet.

60. The highlands of northern Vietnam are home to the 1.5 million-strong Tay, _______ minority group.

6. When my family goes camping, the most interesting thing is to ............. the tent.

A. put up B. get up C. take up D. make up

7. Farmers who are working on ............. look very happy with shining smiles in summer days.

A. grasslands B. paddy fields C. factories D. construction sites

8. ............. is often the hardest but the most important time to people living in the countryside.

A. Tet holiday B. Harvest time C. Daylight D. Travelling time

9. The teacher asked me to speak……………...

1. A. pictures 2. A. homework 3. A. leisure B. watches B. mother B. eight C. buses C. open C. celebrate D. brushes D. judo D. penalty

4. A. fun B. sun C. surf D. cut

5. A. bracelet B. cake C. make D. hat

6. A. although B. laugh C. paragraph D. enough

7. A. comedy B. letter C. princess D. cinema

8. A. high B. sight C. this D. find

A.loud B.louder C.more loud D. most loud