—Why aren’t they here yet? —They the bus.A. can have missedB. must be late forC. may have

问题补充：

—Why aren’t they here yet?

—They the bus.

A. can have missed

B. must be late for

C. may have missed

D. might be late for

答案：

A. can have missed

B. must be late for

(答案→)C. may have missed

D. might be late for

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