It was last night Mr. Brown came back to his hometown from Africa.A. whenB. whereC. thatD.

问题补充：

It was last night Mr. Brown came back to his hometown from Africa.

A. when

B. where

C. that

D. who

答案：

A. when

B. where

(答案→)C. that

D. who

解析：本题强调状语last night。结合强调句型的结构It+be +被强调部分+that+...,故答案选Ｃ。句意：Brown从非洲回到家乡是在昨晚。