—Are you going to stay overnight? —Not _____ it’s really necessary．
#32423
A
unless
B
if
C
until
D
since
推荐题目
____ good use you’ve made of your time to study, there’s still room for improvement.
#32855
A
Though
B
That
C
Whatever
D
However
---How long is it _____ we last met?--- About five years. You haven’t changed much.
#32757
A
before
B
since
C
when
D
that
The doctors said it would be months _____ Yao Ming was fit enough for regular training.
#32953
A
that
B
when
C
since
D
before