—Was it under the tree you were away talking to a friend?—Sure. But when I got back there

问题补充：

—Was it under the tree you were away talking to a friend?

—Sure. But when I got back there, the bike was gone.

A. that

B. where

C. which

D. while

答案：

A. that

B. where

C. which

(答案→)D. while

解析：考查连词辨析。本题很容易错选A项，考生会认为这是一个强调句型。但是本句的意思不符。句意：—当你走开和朋友说话的时候，它是在大树下面吗？—当然，当我回来的时候，自行车就不见了。本题第一句中的it是指the bike。故D正确。