问题

Guess what ! I have got A for my term paper .—Great ! You ________ read widely and put a lot of work into it .
A:should
B:should have
C:must
D:must have
B:should have
C:must
D:must have
正确答案是:
同类题型
how to operate the electronic computer, ______
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―Are you satisfied with what she has done?―Not a little. It can’t be ________.
________ is no doubt _________ Jennifer will come to see me this weekend as usual [ ]