题目内容
从所给的四个选项中选择最佳答案
He ______ have been nervous because he didn't go straight in.
[ ]
A.ought to B.must C.should D.had to
答案:B
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题目内容
从所给的四个选项中选择最佳答案
He ______ have been nervous because he didn't go straight in.
[ ]
A.ought to B.must C.should D.had to