He transplanted the little tree to the garden it was the best time for it.
A. where
B. when
C. that
D. until
网友回答
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。