They must have stayed at home last night,_________?

They must have stayed at home last night,_________?
A.haven't they
B.didn't they
C.mustn't they
D.needn't they
这个题应该选哪个呢!
题干有没有问题呢?

jiansigang 1年前已收到5个回答举报

驱赶幸福感幼苗

共回答了14个问题采纳率：92.9% 举报

选B
must have done sth.后面若有过去时间,如本题的“last night”,则反意疑问句用一般过去时形式：“didn't + 主语”

1年前

心中的安妮幼苗

共回答了4个问题举报

B. didn't they
前面只是情态动词表推测，时间是昨晚，所以用过去式

1年前

ywlss 幼苗

共回答了92个问题举报

我觉得是A
反意疑问句嘛...助动词是HAVE......

1年前

kcy1024 幼苗

共回答了1个问题举报

B吧，过去式啊

1年前

载海的贝壳幼苗

共回答了352个问题举报

C. mustn't they
选择疑问句前面用什么后面就用什么

1年前

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