Please put the bike it belongs after you have used it.
A. where
B. to which
C. what
D. that
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(答案→)A. where
B. to which
C. what
D. that
解析：考查状语从句。本题中的状语从句where it belongs修饰动词短语put the bike;句意：在你用完以后，请把自行车放在属于它的地方。故A正确。B项是短语从句，本句缺少先行词。C项要在句中充当主语，宾语等成分；D项语义不搭配。