单项选择题

Sorry to have kept you waiting for so long.（）

A.Not at all
B.Don 't say so
C.I don't think so
D.It doesn't matter

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单项选择题

A.frightening
B.frightened
C.to be frightening
D.to be frightened

单项选择题

A.others
B.another
C.the other
D.the rest

单项选择题

A.what did you do
B.how well did you play
C.how good were you
D.when did you go