It was some time _____ I realised the fact that life had become difficult for many villages in western Europe.
#92084
A
until
B
before
C
unless
D
since
推荐题目
Thanks to the computer, I got several times _______ information _______ they did. 
#92005
A
as more; as
B
as much; than
C
as much; as
D
as many; as
The Nile River ____ flood large areas but now the water ____ produce electricity.
#92177
A
used to; is used to
B
used to; used to
C
was used to; is used to
D
was used to; used to