Where did you get the reference book?It was in the bookstore _you bought this dictionary.

题目

Where did you get the reference book?It was in the bookstore _you bought this dictionary.
横线上填的是where,但是我觉得填that强调句也通,为什么只能填where呢

答案

如果 It was in the bookstore _you bought this dictionary.是一个独立的句子,没错,填where 和that 都可以.但别忘了,这是个答句,若填that变为强调句意思与问句不符