--I've been waiting for the phone from my uncle since 5 o'clock.

--________. He is not only a skillful driver but he also knows the road very well.

A．How long has he been away?

B．What's the matter with him?

C．I don't think you should worry about him.

D．I'm afraid there's something wrong with the telephone.

党的第二次全国代表大会于（）在上海召开。

A.1922年8月

B.1922年5月

C.1922年7月