The director mentioned to us ______he was going to do this experiment once again by himself.
A．what
B．who
C．that
D．which

A.
A．what
B．who
C．that
D．which


【参考答案】

C
本题考查连词的用法，此处需要连接直接宾语从句的连词，从句中不缺少成分，所以用that而不用what。题意为，......

(↓↓↓ 点击下方‘点击查看答案’看完整答案 ↓↓↓)