结冰探测器安装在___地方？

The great hall was crowded with many people, _____ many children _____on their parents’ laps.

His doctor suggested that he ___ a short trip abroad.

He looked as if he ___ ill for a long time.

I enjoyed the movie very much. I wish I ___ the book from which it was made.

Dr. Bethune worked hard as if he ___.

It is time we ___ up our results.

If I ___ you, I wouldn’t return the call.

He wishes ___ mistakes.

We ___ our lives had it not been for the policeman.

I was busy yesterday, otherwise I ___ your birthday party.