—Where did you lose your bicycle?—It was in the playgroundI played basketball.A. thatB. wh

—Where did you lose your bicycle?
—It was in the playground I played basketball.
A. that
B. where
C. which
D. when

A. that(答案→)B. whereC. whichD. when解析：本题考查状语从句。句意：“你在是哪里丢的自行车的？在我们打篮球的操场上。”本句是省略了that的强调句型。在被强调部分中playground后有一定语从句，补充完整应为It was in the playground where I played basketball that I lost my bicycle.

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