It’s still not clear＿＿＿＿＿the two countries can reach an agreement at the confere

题型：不详难度：来源：

It’s still not clear＿＿＿＿＿the two countries can reach an agreement at the conference．

A．what

B．which

C．whether

D．that

答案

C

解析

试题分析:句意：还不清楚这两个国家是否能在会议上达成协议。在此句中it 是形式主语，后面是真正的主语从句，从句不缺少成份，根据前面not clear判断后句是不确定的事情，所以答案选C。