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
--- ________ do you stay at home at weekends?--- Ten hours.
#60115
A
How often
B
What time
C
How long
D
When
— __________ have you been to Taiwan?— Only once.
#60020
A
How often
B
How many times
C
How long
D
How soon
--- _ ____ does Kate live from her office？---It’s half an hour’s ride.
#60082
A
How far
B
How long
C
How often
D
How soon
He has to finish the experiment today. He must be in the lab, ______?
#64772
A
mustn’t he
B
won’t he
C
doesn’t he
D
isn’t he