—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
网友回答
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。