Listen! His family must be quarreling, _
题型:选择题
问题:
Listen! His family must be quarreling, _____?
A.mustn’t it.
B.isn’t it.
C.aren’t they.
D.needn’t they.
Listen! His family must be quarreling, _____?
A.mustn’t it.
B.isn’t it.
C.aren’t they.
D.needn’t they.