It’s still not clear_____the two countries can reach an agreement at the conference.
A. what
B. which
C. whether
D. that
网友回答
A. what
B. which
(答案→)C. whether
D. that
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。