3. ____ he were there, he couldn’t help us.

　　 A. Even if　　 B. Until　　 C. Till　　 D. Unless

对比训练 7

1. Go and get your coat. It is ____ you left it.

2. ____ I was twenty, I had never been away from my hometown.

1.____ it rains, the game will be played on time.

3. It is ten years ago ____ I came to this town.

　 A. when　　 B. that　　 C. before　　 D. since

对比训练 6

2. It is ten years ____ I came to this town.

1. It will be years ____ we meet again.

4. I’ll give the book to ____ likes English.

　 A. whenever　　 B. whoever　 C. whatever　　 D. however

对比训练 5

3. If we work with a strong will, we overcome any difficulty, ____ great it is.

2. We decide to finish the work on time, ____ happens.

1.He would have a look at the bookstores ____ he went to town.