Question

--Do you know ________ now?

--In the People's Hotel.

1. A.
   where is Tom working
2. B.
   where did Tom work
3. C.
   where Tom is working
4. D.
   where Tom worked

Answer 1

C
考查宾语从句的顺序和时态。应该用陈述句的顺序，即：先引导词，再主语，再谓语动词，由此排除A、B选项，题中有时间状语now，应选现在进行时态。故选C。