The guards______to see her I. D. before they allowed her in the building.A、deman

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问题 The guards______to see her I. D. before they allowed her in the building.

选项 A、demand
B、demanded
C、had demanded
D、will demand

答案 B

解析句意：在他们进楼之前，保安查看了他们的身份证。本题中用的是过去时态，检查身份证发生在进楼前，时间在过去的过去，而C为现在完成时，A为一般现在时，D为一般将来时，只有B为一般过去时。故选B。

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Theguards______toseeherI.D.beforetheyallowedherinthebuilding.A、deman