题目

1.-where did you see him? -It was in the factory( )we once worked A.when B.where C.that D.which
说明一下原因

提问时间：2020-10-13

答案

B
因为是in the factory 有介词in 的就是地点状语,要用where
就是the factory where we once worked in
如果没有in 应该是which