Question

---______ the farmers discovered the entrance to the secret cave in the valley?
--- Totally by chance.

A．When was it that

B．How was it that

C．How it was that

D．When it was that

Answer 1

B

試題分析：通過(guò)分析句子結(jié)構(gòu)，可知這是一個(gè)特殊疑問(wèn)句的強(qiáng)調(diào)句，基本結(jié)構(gòu)是“特殊疑問(wèn)詞 + is/ was + it that……”因?yàn)榘褟?qiáng)調(diào)句的基本結(jié)構(gòu)is/ was + it that去掉仍然是一個(gè)完整的句子，所以是強(qiáng)調(diào)句。