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)．
