Be quick! Jim for us downstairs.A. waitsB. is waitingC. will waitD. waited

问题补充：

Be quick! Jim for us downstairs.

A. waits

B. is waiting

C. will wait

D. waited

答案：

A. waits

(答案→)B. is waiting

C. will wait

D. waited

解析：句意：快点！吉姆正在楼下等我们。根据句子意思，要用现在进行时态。故选B。