What did she want to know,Tom?She wondered______we could complete the experiment为啥不能填it was when
问题描述：
What did she want to know,Tom?She wondered______we could complete the experiment
为啥不能填it was when
答
when it was that it was that是强调句型。去掉it was that 后，句子还是完整的。
答
when
如果用强调句,应该是：
when it was that
when 虽然可以是被强调部分,但作为引导宾语从句的连接词,必须置于从句之首