问题标题:
---YouwereoutwhenIdroppedinatyourhouse.---Oh,I________forafriendfromEnglandattheairport.A.waswaitingB.hadwaitedC.amwaitingD.havewaited
问题描述:
---YouwereoutwhenIdroppedinatyourhouse.---Oh,I________forafriendfromEnglandattheairport.
A.waswaiting
B.hadwaited
C.amwaiting
D.havewaited
孙静静回答:
A
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