Question

--- Where is my English book?
--- I brought it to you _____you were in hospital yesterday afternoon

1. A.
   since
2. B.
   if
3. C.
   once
4. D.
   while

Answer 1

D
该题考查状语从句的用法。本句意思是；昨天下午你在住院的时候，我就把英语书带给你了。因此本题最佳答案是D。