she had to take care of the dog at home ,____?A .hasn't she B .didi she C .has she D .didin't she

问题描述:

she had to take care of the dog at home ,____?
A .hasn't she B .didi she C .has she D .didin't she

D

D .didin't she, 前肯后否, had 为过去式,故用didin't反问.

选D
因为had是实义动词,所以反义疑问句用助动词did
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