题目内容
【题目】My parents were ______vacation last week.
A.at
B.on
C.for
【答案】B
【解析】be on vacation:在假期中。固定用法。故选B。
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题目内容
【题目】My parents were ______vacation last week.
A.at
B.on
C.for
【答案】B
【解析】be on vacation:在假期中。固定用法。故选B。