I hate travelling by air__________ you usually have to wait for hours before the plane takes off.
#56398
A
because
B
though
C
until
D
unless
推荐题目
We can’t go out for a walk _______ the bad weather.
#56819
A
because of
B
because
C
about
D
so
I’ll buy ______ this dress ______ that one. They are too large for me. 
#55334
A
either, or
B
not only, but also
C
neither, nor
D
both, and