专题3 非谓语动词和交际用语_8
(北京市海淀区2016届高三下学期期末考试(二模))If ________ in the elevator, please press the emergency button immediately.A.trapped B.trappingC.having trapped D.to be trapped
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(北京市海淀区2016届高三下学期期末考试(二模))If ________ in the elevator, please press the emergency button immediately.A.trapped B.trappingC.having trapped D.to be trapped