Question

--May I watch the football match on TV?

--If your homework _________, you can watch it.

1. A.
   will do
2. B.
   is done
3. C.
   has done
4. D.
   will be done

Answer 1

B
if引导的时间状语从句中，if从句需用一般现在时。根据主句的关系和意义，需选择一般现在时的被动语态。