______this difficulty is overcome, other problems will be easy to solve.
#33583
A
For
B
Whether
C
Once
D
Though
推荐题目
--- May I go and play with Dick this afternoon, Mum?--- No, you can’t go out _____ your work is being done.
#31631
A
before
B
until
C
as
D
the moment
—Did you meet with the famous star yesterday? —______ I had come a little earlier!
#30119
A
If only
B
Only if
C
But for
D
For fear
___________ I toured Zhangjiajie, I was deeply impressed with its beautiful scenery.
#31575
A
For the first time
B
At first
C
It was the first time
D
The first time