Lessons can be learned to face the future, ________ history cannot be changed.
#30007
A
though
B
as
C
since
D
unless
推荐题目
There is a new problem involved in the popularity of private cars________road conditions need________.
#31999
A
that；to be improved
B
which；to be improved
C
where；improving
D
when；improving
It was not until dark ______ he found ______ he thought was the correct way to solve the problem.
#30758
A
that; what
B
that; that
C
when; what
D
when; that
Sometimes I keep my feelings to myself it’s hard for someone else to understand.
#31245
A
as soon as
B
because
C
as long as
D
although