Question

I don't care ________.

1. A.
   when do we have to go
2. B.
   when we have to go to
3. C.
   when we have go
4. D.
   when we have to go

Answer 1

D
点拨：首先宾语从句应当使用陈述句的语序，其次，when是副词，在和go连用时不用加介词。