问题详情：
用所给单词的适当形式填空
1. I enjoyed (live) in China.
2. Tom is (hard-working) than Sam.
3. It’s not difficult for me (answer) the problem.
4. He is good at (study) math.
5. Do you know some (different) between British English and American English.
6. They shop (two) a week.
7. Some boys play football two or three (time) a week.
8. Here (be) the results of the students activity survey.
9. He never took part in the (sing) competition at school.
10. (drink) coffee too much is bad for health.
【回答】
ng hard-working 3. to answer
ying erences 6. twice
7. times 9. singing 10. Drinking
知识点：构词法
题型：完成句子
