Professor Pile _____ to Hangzhou before, so I went to meet him at the airport.A、

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问题 Professor Pile _____ to Hangzhou before, so I went to meet him at the airport.

选项 A、didn’t go
B、hasn’t been
C、wouldn’t go
D、hadn’t been

答案 D

解析

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A、Earlyinthemorning.B、Beforelunch.C、Atlunchtime.D、Afterlunch.C信息明示题。很