问题

You shouldn’t have shouted at your mother. It really hurt her. —Exactly. I ________ crazy at the time.

A:must be
B:could be
C:must have been
D:could have been

正确答案是：

同类题型

Tom opened a bookstore in NO.3 Middle School, but it closed down.

I would rather historythan geography because I can learn a lot from many historical figures.

I thinkthat this is the best mobile phone available in the world. No other one can________it.

How come a simple meal like this costs so much?-We have ________ in your bill the cost of the cup you broke just now.[ ]

Where’s Mary—Sorry，I__________.