The program is like a window on the world ____ you sit by it and fix your attention on what it shows.
#72151
A
if
B
as
C
while
D
unless
推荐题目
You must be aware that it’s here _____we found evidence of some of the earliest people who lived in this part of the world.
#70043
A
where
B
that
C
/
D
what
——Did Jack come back early last night?——Yes. It was not yet eight o’clock _______ he arrived home.
#67405
A
before
B
when
C
that
D
until