Many people can't learn any lessons from the mistakes they've made _____ they get hurt somehow.
#31589
A
whether
B
unless
C
if
D
as
推荐题目
You can’t catch the charm of English poetry ___you understand its rhythm．
#32731
A
if
B
unless
C
though
D
while
You may keep the book for one more week _______no one else needs it.
#31850
A
provided that
B
so that
C
in order that
D
in case
- Have you known each other for long?- Not really. ________ we started to work in this school.
#30808
A
Just after
B
Just when
C
Ever since
D
Just before
That dog ought to be destroyed ______ it attacks any more children.
#31233
A
until
B
since
C
after
D
before