I will wait here ____ the concert is over.
#58456
A
by
B
when
C
until
D
as
推荐题目
______hours do you exercise every week ?  Nine hours.
#56316
A
How many
B
How often
C
How much
D
How long
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