I.Sử dụng các từ trong ngoặc để viết lại câu sao cho nghĩa không thay đổi:
1. They worked very hard in spite of their old age. (OLD)
2. Tom works more carefully than John. (AS)
3. "How many students are there in your class, Tom?"(HIS)
4. Jenny spends two hours doing her homework every day.( TO)
5. Why don't you plant some trees around your house to get more fresh air ? (ABOUT)
6. He didn't open his birthday gifts until after all the guests had left. (BEFORE)
7. "Do you know Long's address?" he asked me.(knew)
8. They are building a new bridge over the river. (BEING)
9. I used to go to the cinema on Sundays.(went)
10. You feel unhealthy because you don't take any exercise. (So)
11. Unless we protect the environment, our life will be badly affected. (IF)