【题目】This is ________train and that is ________ airplane. ( )
A. a; a B. a; an C. an; an
【答案】B
【解析】
略
【题目】This is ________train and that is ________ airplane. ( )
A. a; a B. a; an C. an; an
【答案】B
【解析】
略
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