Scientists don’t think that a warm winter always has a negative influence on our life,____?
#64541
A
don’t they
B
do they
C
hasn’t it
D
has it
推荐题目
-- _________ will the foreign students be back from Nanjing?--In two days, I think.
#60275
A
How soon
B
How often
C
How fast
D
How long
---My Dad began to teach me English when I was eight.---Wow. You must have studied English for six years, ?
#64528
A
haven’t you
B
mustn’t you
C
needn’t you
D
don’t you
The student must be working very hard, ________?
#64521
A
doesn’t he
B
mustn’t he
C
needn’t he
D
isn’t he