问题

All flights ___________ because of fog. I’m afraid you will have to stay here for another day.

A:had been put off
B:called off
C:have been called off
D:have put off;

正确答案是：

同类题型

Is dinner ready，Mom—No，not________.

My uncle _____ Germany on business many times.

The nurse treated the naughty boy very kindly, but her patience ____ at last.

I can’t bear ________, so I hope you can come on time.

these models several were exciting,____ of them exactly right．