Question

He transplanted the little tree to the gar den ________ it was the best time for it.

1. A.
   where
2. B.
   when
3. C.
   that
4. D.
   until

Answer 1

B
解析：本题句意是“在最好的时机他把这棵小树移植到了花园里．”用when来引导一个时间状语从句．
命题立意：状语从句引导词的判断要根据上下文的逻辑意义来确定．