1. wake/have

2. went/swam

3. met/had

4. did/watched

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go-studies-eat-watches-visted-bought-travelled-did...read-had

go

studies

eat

watches

visited

bought

travelled

read

had

1.x

2.x

3.x

4.a

5.x

6.the

7.a

8.an

9.x

10.a

1. 0

2. 0

3. the

4. a

5. the

6. the

7. the

8. an

9. 0

10. a

Yes, I think cooking also a useful. Because after some cases of fire and explosion, cooking also helps us have more cooked and digestible food, which is very good for our health.

giúp mình với

Phần gạch chân đâu bạn?

Gọi đáy lớn ad là a, đáy nhỏ bc là b, đường cao là h
Ta có: S tam giác BCD là: (b x h) : 2= 254 (cm2) => b x h = 254 x 2=508(cm) (1)

Có: S hình thang ABCD= ((a+b)x h):2=> (a x h+b x h): 2

                                                mà a=3xb

                                                  =>(3 x b x h+b x h):2   (2)

Từ (1) và (2) ta có: (3 x 508 + 508):2= S hình thang abcd

                             => 2032 : 2 =S hình thang ABCD

                             =>S hình thang ABCD= 1016(cm2)

tiếng anh ảo thiệc sự

go

I usually go to the park on weekends.

pollute

pollutant

doesn't, eats

had

was, worked