问题

Do we have to hand in our research reports this afternoon, Professor Smith?— Yes, you _______ . I will be waiting to check them all the afternoon.
A:should
B:may
C:can
D:must
B:may
C:can
D:must
正确答案是:
同类题型
One feels it hard to fit in with a new culture _______ he has been accustomed to his won culture
to sell his luxury car, ________ hiscompany was in debt.
I’ll come to see you this evening_______I can stay only for a few minutes.
We have two foreign teachers here. One is from England, and ______ is from America.
Does your father go to work by __________ car every day—No, he sometimes takes __________bus.