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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

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I like traveling. I       to Belgium five months ago, but I       anywhere ever since.

A.went; haven’t gone                                    B.went; didn’t go 

C.have been; don’t go                                  D.had been; haven’t gon

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