问题

Guess what! I have got an A for my term paper.—Great! You ______ read widely and put a lot of work into it.[ ]
A: must have
B: should
C: must
D: should have
B: should
C: must
D: should have
正确答案是:
同类题型
Sensible people don’t think it is_______ to buy things which are not needed even at a low price.
You must have waited here for a long time ,___________you?
We should consider it ________a duty to serve the Chinese people heart and soul.[ ]
While studying, fix your mind on what is really important, or you will ______remembering nothing.