China Business Daily reported the 60% discounts on some Beijing-shanghai flights have now slipped back to 20% _______ one day in advance.
#81508
A
when books
B
when to book
C
when booking
D
when booked
推荐题目
No sooner______ themselves in their seats in the hall than the speaker began his speech.
#79974
A
they settled
B
had they settled
C
did they settle
D
they had settled
__when we passed by its nest. 
#83874
A
Up into the blue sky did the bird fly
B
Up into the blue sky the bird flew
C
Up into the blue sky flew the bird
D
Flew up into the blue sky the bird
I wonder if your wife will go to the ball. If your wife _____, so _____ mine.
#81895
A
does, will
B
will, does
C
will, would
D
does, do