It was when he got home ___ Jim found that he lost his purse.

问题描述:

It was when he got home ___ Jim found that he lost his purse.
A .that B .where C .before D .until

选a.这是强调句型.It was.that+句子.固定搭配.
它的特点是去掉It was ...that 这三个词之后,仍然是一句完整的话.
也就是When he got home Jim found that he lost his purse.