-- was your trip?--It was very nice.A. WhatB. WhereC. HowD. When

问题补充：

-- was your trip?

--It was very nice.

A. What

B. Where

C. How

D. When

答案：

A. What

B. Where

(答案→)C. How

D. When

解析：本题考查疑问词。问“怎么样”用how。句意：——你的旅行怎么样？——非常好。