Q6:

1. My grandmother is too old so she can't work now.

2. It took us along time to learn.

3. She has bought that villa since 1973

4. When is your birthday?

5. The sea was rough so the children couldn't go swimming.

6. I prefer listening to music at home than going to the concert.

7. You'd eating less candies.

8. He drives slowler and more careful than I do.

9. The visitors spoke too quickly soo I could't understand what he said.

10. This is the most romantic story I have read.

Q7:

1. Harry went to the doctor yesterday beacause he had an awful stomachache.

2. I don't like eggs and my brother doesn't, either.

3. "Balanced diet" means you eat variety of foods without eat too much anything.

4. Millions of people catch the common cold every year.

5. At the recess yesterday, Trang drunk some water and talked to her friends.

Ex 6: 

1. My grandmother is too old too work now.

2. It took us a long time to learn this. ( câu này thì mình không chắc ).

3. She has bought that villa since 1973.

4. When did you born?

5. The sea was so rough that the children couldn't go swimming.

6. I prefer listening to music at home to going to the concert. 

7. You'd better not to eat to many candies.

8. He drives more slowly and carefully than I do.

9. The visitors spoke too quick to me to understand what he said. ( câu này thì mình có tham khảo các bài khác nhưng đều thấy là too...for, tuy nhiên thì theo mình cấu trúc đúng phải là too...to)

10. This is the first time I 've ever read such a romantic story.