Hurry up!Jane__for us at the bus stop.A.must wait B.must be waitingC.can be waited D.must have waited 请问选哪个为什么?

问题描述:

Hurry up!Jane__for us at the bus stop.A.must wait B.must be waiting
C.can be waited D.must have waited 请问选哪个为什么?

B 肯定语式 和 现在进行时