Listen! His family must be quarrelling, ____?
#65388
A
mustn’t it
B
isn’t it
C
aren’t they
D
needn’t they
推荐题目
    yogurt do you need?
#60003
A
How long
B
How many
C
How much
D
How old
Look! the ground is wet. It must have rained last night, _______?
#64817
A
hasn’t it
B
didn’t it
C
mustn’t it
D
hadn’t it