题目内容
--- Oh, there is someone knocking at the door.
--- __________ must be your neighbour, Mrs Black.
--- __________ must be your neighbour, Mrs Black.
A.There | B.She | C.He | D.It |
D
试题分析:句意:上句,有人在敲门,下句,你定是你的邻居Mrs Black.在打电话或敲门是不能分辨对方是谁,我们用it来指代,故选D。

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