Several weeks had gone by _______ I knew the painting was missing.
#32417
A
as
B
since
C
until
D
before
推荐题目
—— The experiment is of particular importance.—— I see. We won’t carry on with it _______ we can get the good equipment.
#33750
A
until
B
unless
C
whether
D
after
Tom looked upon the test as an obstacle _____ his classmates regarded it as a challenge.
#31299
A
while
B
because
C
unless
D
if
－ Since you’ve made your decision, you’d better carry it out.－ _________ I give it up?
#33888
A
Only if
B
What if
C
If
D
Even if
I’m sorry I got caught in the traffic；_________, I could have been here sooner．
#33598
A
besides
B
although
C
anyway
D
otherwise
You can make a complaint to the local government ____you are happy with the way things are.
#30961
A
unless
B
if
C
once
D
as