_______ 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 will go to visit my aunt in England ______ the summer holiday starts.
#55464
A
while
B
since
C
until
D
as soon as
None of them knew what had happened _________ I told them about it.
#55978
A
when
B
until
C
after
D
though
