Question

【题目】We still have the question of ________ they have discovered the trade secret.

A. whatB. whyC. how D. that

Answer 1

【答案】C

【解析】

试题分析：考查宾语从句。句意：我们仍然对他们如何发现这商业秘密有疑问。从句中主谓宾齐全，所以空格处只能作状语或起连接作用，故排除A项；C项符合语境。