问题

Wow, what a large crowd!—Yes, And they______ in the cold wind forhours. You know, Premiere Wen Jiabao is coming here.

A:the elder ofwhom served
B:have waited
C:are waiting
D:have been waiting

正确答案是：

同类题型

It was very late, but the teachers were ________ working hard in the office.

_____ in the queue for half an hour, Tom suddenly realized that he had left his wallet at home. [ ]

I like songs I can sing along_____. — So do I .

As nobody here knows what is wrong with the machine, we must send for an engineer to _________ the problem.

Will you take my previous experience into when you fix my salary