i don't remember-he workde in that city when he was young Awhat Bwhich Cwhere Dwho

打字这样黏在一起，搞到我差点不知道你说什么。选C。我不记得他年轻时在那座城市的哪里工作。A.什么 B. 哪一个 C.哪里 D.谁

i don't remember__where__he worked in that city when he was young?
我不记得他年轻时在那个城市的哪儿工作?
不选what 是因为work是及物动词,应说 what he worked do?