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- How could they keep us waiting for so long? - They got on the bus half an hour

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- How could they keep us waiting for so long? - They got on the bus half an hour

 — How could they keep us waiting for so long?

   — They got on the bus half an hour ago and they ________ be here in tenminutes, I think.

    A.might    B. would    C. should   D.must

 

试题答案

【答案】

 C