_______ 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
推荐题目
I have to leave now __ I can catch the last bus.
#56432
A
so that
B
because of
C
until
D
as soon as
     Jack had a fever,       he finishing doing his homework yesterday.  
#58574
A
Although; but
B
But; although
C
Although; /
D
/;although
Eddie was sleeping _______ Millie was reading a magazine.
#57336
A
until
B
while
C
before
D
after