7. The cat is very good at　 c_______ the trees .

6. We often borrow the books from the　 l___________.

5. He often　 g_______ shopping with her mother at the weekends .

4.. Helen doesn’t want to help him , e_________. (也)

3. My sister didn’t past the exam , so she is very　 w___________.

2. They enjoyed　 t_________ last vacation

1. The students stopped　 p_________ basketball.

20. How long have you been _______? A. smoking B. smoke C. to smoke D. smokes (吸烟)

19. Could you help me ________ my homework ? A. to　 B. with C. in　 D. at

18. Could you ____________ not shout in the street ?　 A. mind　 B. please C. like D. love