It is difficult for us to learn a lesson in life _____we’ve actually had that lesson.
#79988
A
until
B
after
C
since
D
when
推荐题目
— How long will it be _______ the president pays another visit to China?— It all depends.
#32222
A
before
B
until
C
since
D
when
Viewers continue to watch TV ______ they complain about the quality of the programming.
#33448
A
even though
B
as if
C
as long as
D
unless
Peter was so excited________he received an invitation from his friend to visit Chongqing.
#31455
A
where
B
that
C
why
D
when
—What do you think of the music teacher ?—______ she is an attractive lady, she can be extremely difficult to work with．
#32263
A
If
B
As
C
Because
D
While
What the doctors really doubt is my lather will reeover from me serious disease soon.
#30620
A
whether
B
when
C
why
D
how