Some scientists believe that it won’t be long _______ robots are widely used in all walks of life.
#82112
A
since
B
after
C
before
D
until
推荐题目
____ in a branch of the tree ___ a note which read "I'll meet you at the School Gate".
#80881
A
Sticking; was there
B
Stick; was there
C
To stick; was
D
Stuck; was
Out _____ , and away ______ . 
#83111
A
the men went ; was he
B
went the men ; he was
C
went ; he
D
the man went ; he was
Everyone has arrived at eight and ____. 
#83910
A
then does the meeting begin
B
then begins the meeting
C
begins the meeting then
D
does the meeting begin then