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Doing regular exercise or playing sports can be dangerous, ( 1) even if you are over 40. ( 2) This is why it is a very good idea to see your doctor ( 3) after starting if you think you are not very fit. Some people try to do exercise or play sports too vigorously too soon, and ( 4) as a result they cause themselves injuries ( 5) which can take a long time to heal. ( 6) therefore, it is not only older people who should take care. Doctors report many injuries ( 7) like backaches, sprained ankles and pulled muscles, which can all be avoided if a little care is taken. If you do injure yourself, rest for a while ( 8 ) to allow your body to recover naturally. ( 9) from those, don’t push yourself because you think it is doing you good. (10) In the similar way, you could do yourself permanent damage.
1) especially
2) so
3) before
4) as a result
5) that
6) however
7) such as
8) to
9) above all
10) on the contrary

1. It seems as if there is a slight deterioration in his physical condition.
-->His physical condition seems to be slightly deteriorated
2.Anna failed to understand how serious her illness was until she spoke to the doctor.
-->Not until Anna spoke to the doctor did she understand how serious her illness was
3.Although Professor Sweet knew a lot about grammar, he couldn't answer the question.
-->Dispite knowing a lot about grammar, Professor Sweet ouldn't answer the question.
Dispite having a lot of knowledge/ understanding of grammar, Professor Sweet ouldn't answer the question.

__Playing___ (play) rounders is a lot of fun. It’s like baseball, but it isn’t as difficult. You don’t have to (1) _____wear_______ (wear) sp ecia l clothes or caps and you can (2) ____use________ (use) a tennis ball when you play. The only thing you must (3) _________have___ (have) is a bat – rounders bats are shorter and lighter than baseball bats. Anyone can play. (4) ______ Being______ (be) good at sport isn’t important. There are girls and boys, young and old, on a rounders team, and they are only interested in (5) ______having______ (have) fun. (6) _______Winning_____ (win) isn’t the main thing. Of course, some people are better at (7) _____playing_______ (play) rounders than others, but they don’t want (8) ______to score______ (score) all the points. Everybody has a go. Personally, I love (9) ____playing________ (play) rounders because it’s a game for all the family. You can (10) ______have______ (have) a great time together.

Tìm lỗi sai và sửa
My cousin usually do his share of the housework by laying the table for meals
A.do=> does
B. His share of
C. By
D. Laying
We are looking for an employee who is not only skillful and responsible but also a good sense of humour
A. Looking for
B. An employee
C. Who is
D. A good sense of humour => humourous
Bởi vì a good sense of humour là một cụm danh từ (nous phrase)
Nhưng sau is cần tính từ (adj), như bạn thấy ở trên :
We are looking for an employee who is not only skillful and responsible but also....
nên ta dùng humourous (adj)

Change all of the adjective clauses to adjective phrases
1. My father, who is a pilot, often goes abroad
=> My father, a pilot, often goes abroad
2. We have a few exercises that we have to do
=> We have a few exercises to to
3. Animals that are born in a zoo generally adjust to captivity better than those that are captured in the wild
=> Animals born in a zoo generally adjust to captivity better than those captured in the wild
4. She simply loves parties. She's always the first who come and the last who goes
=> She simply loves parties. She's always the first person to come and the last to go.
5. People who they are protesting against pollution have gathered in front of the Town Hall
=> People protested against pollution have gathered in front of the Town Hail.
6. A new international airport which will cost 20 billion dollars is planned
=> A new international airport costing 20 billion dollars is planned.
7. Your son was the second child who was kipnapped in this way
=> Your son was the second child to be kidnapped in this way.
8. Families who were living in an empty office building
=> Families (thiếu động từ chính)
9. Brad was the only person who discovered her secret
=> Brad was the only person to discover her secret
10. A chemical company which employed 4,000 people has gone bankrupt
=> A chemical company employing 4,000 people has gone bankrupt.
11. A new drug which was developed at an American university may give us eternal youth
=> A new drug developed at an American university may give us eternal youth
12. I have some letters that I must write
=> I have some letters to write
13. She is the only woman who was appointed to the board
=> She is the only woman to be appointed to the board.
14. Who was the first person who left the office yesterday?
=> Who was the first person to leave the office yesterday?
15. We had a bottle of wine, but we didn't have anything that we could open it with
=> We had a bottle of wine, but we didn't have anything to open it with.
A doctor who treats only particular illness is specialist.