8.　　 He does his homework in the evening.

7.　　 The boy can read some English books now.

6.　　 There will be a class meeting tomorrow afternoon.

5.　　 Professor Wang wrote me a letter last week.

4.　　 He is reading the novel now.

3.　　 Jenny was cooking dinner at six yesterday.

2.　　 Mr Smith comes to our country twice a year.

1.　　 There is something wrong with my radio.

9. Did　 hit　 10. How　 fast　 11. if / whether　 he　 12. was　 held

13, does, he　 14, both, and　 15, would, give　 16, aren’t’ allowed / ought to　 17, How, far

18, Did 　have　 19, How long 　20, to 　start 　21, Neither　 nor　 22, won’t　 unless

23, doesn’t, have　 24, Have, any　 25, didn’t, until　 26, How, long　 27, be, protected

28, doesn’t, study　 29, How, much　 30, was, saved　 31, if, don’t

5. whether/if; would　 6. How soon　 7. where to　 8. either; or