—How long do you think it will be______ man can finally solve the problem of cancer?—Well，it depends
#30976
A
when
B
until
C
after
D
before
推荐题目
A man does not know the difficulty of anything_________ he does it personally.
#80329
A
although
B
if
C
because
D
unless
His failure in the exam was expected. ________, it was still very disappointing.
#32614
A
Nevertheless
B
Furthermore
C
Besides
D
Therefore
Try your best to help the people when they are in trouble, _______you will feel pleased and happy.
#31495
A
unless
B
or
C
and
D
But
__________ your argument, I shall hold to my decision.
#30028
A
Whatever
B
Whenever
C
Whichever
D
Wherever