He transplanted the little tree to the garden it was the best time for it.A. whereB. whe

问题补充：

He transplanted the little tree to the garden it was the best time for it.

A. where

B. when

C. that

D. until

答案：

A. where

(答案→)B. when

C. that

D. until

解析：此题容易误选C,把the garden看成是先行词，以为是where引导的表地点的定语从句。其实此题应选B。这是when引导时间状语从句。此句话的汉语意思是：他把小树在最合适的时候移植到花园。