—Guess what! I have got A for my term paper. —Great! You        read widely and put a lot of work into it.
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A
must
B
should
C
must have
D
should have
推荐题目
He ought to win the first prize, _____ he?
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A
oughtn’t
B
shouldn’t
C
mustn’t
D
both A and B
What would have happened ______as far as the river bank ?
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A
Bob had walked farther
B
if Bob should walk farther
C
had Bob walked farther
D
if Bob walked farther