题目内容
【题目】They _______ young then. But now they _______ old.（ ）
A. was; is B. were; are C. are; were
【答案】B
【解析】
略
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题目内容
【题目】They _______ young then. But now they _______ old.（ ）
A. was; is B. were; are C. are; were
【答案】B
【解析】
略