Question

高中英语题，急！！！！！

If that lab __wo did the experiment in ? 答案给的是that 为什么不是which？
那个 wo是we 打错了。。。

Answer 1

因为lab 前面有that这个代词修饰，所以只能用that，而不能用which。

参考资料：
限制性定语从句只能用that的几种情况
当先行词是anything, everything, nothing (something 除外), few, all, none, little, some等代词时，或者是由every, any, all, some, no, little, few, much，each等修饰时
(1) Have you taken down everything (that) Mr. Li has said?
(2) There seems to be nothing (that) seems impossible for him in the world.
(3) All that can be done has been done.
(4) There is little (that) I can do for you.

Answer 2

同位语，用 that,你后面那个wo是什么