Question

You will have to stay at home all day ______ you finish all your homework

1. A.
   if
2. B.
   unless
3. C.
   whether
4. D.
   because

Answer 1

B
本题考查连词。根据句意：除非你完成你所有的家庭作业，否则你将整体呆在家里。用unless，选B。