Look!The ground is wet.It must have rained last night,________?
#64477
A
hasn’t it
B
didn’t it
C
mustn’t it
D
hadn’t it
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—Haven’t you been to Beijing before?— . I went there last summer.
#60283
A
Yes, I have
B
Yes, I haven’t
C
No, I have
D
No, I haven’t