Since it will take years to know the effect of genetically modified food, it’s more sensible to give it a second thought before we eat it,        it?
#64705
A
isn’t
B
is
C
won’t
D
will
推荐题目
You must work hard from now on,      ?
#65248
A
can you
B
won’t you
C
mustn’t you
D
needn’t you
Her daughter had a bad cough again, ______she?
#64826
A
wasn’t
B
doesn’t
C
didn’t
D
hadn’t