______the Internet is of great help, I don’t think it’s a good idea to spend too much time on it.
#79821
A
If
B
While
C
Because
D
As
推荐题目
—Do you know the mission of the volunteers?—No. But I think _____ they will end up doing there will promote public awareness of environmental protection.
#31764
A
that
B
no matter what
C
whatever
D
whether
______he has made up his mind, no one can make him change it.
#32727
A
Although
B
Unless
C
Until
D
Once
Our government has taken some measures to overcome the lack of electricity, but it may take some time _____ we have enough power．
#33827
A
since
B
after
C
unless
D
before
A lot of people don’t learn from their mistakes ______ they get hurt.
#31476
A
whether
B
when
C
if
D
unless