______ you keep trying till the end, you will never know how strong you are!
#55142
A
Although
B
If
C
Unless
D
Because
推荐题目
—It’s very hot in the room! --_______ the door open?
#55563
A
Why don’t keep
B
Why don’t to keep
C
Why not keep
D
Why not you to keep
 –______is the jacket?   –It’s green.
#56075
A
Where
B
How
C
What’s
D
What color
---Did you hear the rain? ---______ .
#55536
A
Until 30 minutes
B
Until 30 minutes later
C
Not until 30 minutes
D
Not until 30 minutes later