No one knows ______effects the GM material might have on the food chain. 
#79147
A
what
B
which
C
whose
D
how
推荐题目
Can you see _____________?
#38837
A
what he’s reading
B
what is he reading
C
what does he read
D
he reads what
—Have you asked the policeman _______?—Yes. He told us to turn left onto Main Street. It’s on the right.
#37788
A
if there is a bank near here
B
how can we get to the nearest bank
C
where can we find a bank
D
when we can go to the nearest bank
—Can you tell me __________the book? —Last year. 
#37602
A
when did you buy
B
when do you buy
C
when you buy
D
when you bought
--Which of the following sentence is right?--I wonder _________.
#38064
A
who broke the window
B
whose pen is this?
C
which room I will live
D
what’s the population of China