The villagers have already knownwe’ll do is to rebuild the bridge.A. thisB. thatC. what D.

问题补充：

The villagers have already knownwe’ll do is to rebuild the bridge.

A. this

B. that

C. what

D. which

答案：

A. this

B. that

(答案→)C. what

D. which

解析：通过分析句子结构，可知这个句子中包含一个宾语从句，且引导词在从句中作宾语，表示什么的意思，故用what。