问题
选择题
I________have gone the concert because I know nothing about that kind of music.
A．couldn’t
B．mustn’t
C．shouldn’t
D．oughtn’t
答案
答案：C
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I________have gone the concert because I know nothing about that kind of music.
A．couldn’t
B．mustn’t
C．shouldn’t
D．oughtn’t
答案：C