用括号里的动词的正确形式完成句子。

1. If you___(arrive) ten minutes earlier, you could have seen them off.

2. It's time that we____(go) to the railway station.

3. If they____(not help) us, our experiment would have failed.

4. You're five minutes late. I suggested that you____(come) earlier tomorrow.

5. Mother often tells us that it is necessary that we____(drink) a glass of water after we get up.

6. She insisted that she____(send) to work in the faraway small town.

7.____I not____(forget) his telephone number, I would have rung him.

8. He is busy now. If he____(be) free, he____(go) with you.

9. The manager was in his office then. If he____(be) here, everything____ (settle)in a minute.

10. Noisy as it was, he went on reading as if nothing____(hap- pen)．