问题

— You shouldn’t have talked back to our teacher like that. It was awfully impolite.— You are right. I ______ crazy at that moment.[ ]

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

正确答案是：

同类题型

In the botanical garden we can find a(n) __________ of plants that range from tall trees to small flowers.

man has his faults. We should, therefore, learnto be ______ of others.

Are your parents at home now -No. _______ of them are on holiday.

—I wonder if I can get a rise insalary —You have been paid enough __________ doyou want

It was a really_____experience. Afterwards everybody was very_____ .[ ]