-Why aren’t they here yet? -They the bus. A．can have missed B．must be late for C

—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

试题答案

C

解析:

他们未何还未到？可能是未赶上汽车。表示对过去事实的猜测。故选C。