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
— does Grace do her English exercises every day?—About thirty minutes.
#60029
A
How many
B
How much
C
How long
D
How far
— __________ have you been to Taiwan?— Only once.
#60020
A
How often
B
How many times
C
How long
D
How soon
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
She thinks the naughty students have escaped being punished by their teacher, __________?
#64562
A
does she
B
doesn’t she
C
have they
D
haven’t they
——Would you mind if I keep the door open? ——____________.
#64969
A
Yes, do it
B
No, of course not
C
Yes, go ahead
D
No, you can’t open it