6. The letter is from my sister. I received it yesterday.

5. The woman is our geography teacher. You saw her in the park.

4. The students will not pass the exam . They don’t study hard.

3. The magazine is mine. He has taken it away.

2. The man is in the next room. He brought our textbooks here yesterday.

1. The fan is on the desk. You want it.

23. He was unable to make such progress, ____.

　　　 A. hard as he tried　　　　 B. as hard he tried　　　　 C. hard he has tried　　　　　　　 D. tried hard as he

22. No sooner ____ they rushed out into the street.　　 　　　　　　　 A. did they hear the news than　　　

　B. did they hear the news when　 C. had they heard the news than　 D. had they heard the news when

21. ---- David has made great progress recently.　 ---- ____, and ____.　　　 A. So he has, so have you　　 B. So he has, so you have　　　 　 C. So has he, so have you　　　　　　　　　　 D. So has he, so you have

20. ____, he would have passed the exam.

　　　 A. If he were to study 　 B. If he studied hard　 C. Had he studied hard　 D. Should he study hard