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—Theyaresupposedtoarriveatsix,butthereisnosignofthem.—S...

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問題詳情:

—Theyaresupposedtoarriveatsix,butthereisnosignofthem.—S...

—They are supposed to arrive at six, but there is no sign of them.

—Something unexpected          to them.

A.might happen                                                  B.must have happened

C.would have happened                                    D.could happen

【回答】

B

知識點:虛擬語氣

題型:選擇題

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