You should keep working hard ____ you have passed the exam. 
#56116
A
since
B
because
C
so
D
even though
推荐题目
_______ Mary ______ John has been to China before, but they know a lot about it
#57612
A
Either, or
B
Both, and
C
Neither, nor
D
Not only, but also
It’s very nice ____ some money to me .
#57699
A
of you to lend
B
for you to lend
C
for you to borrow
D
of you to borrow