It was not until the beginning of the twentieth century________to explore space.
#93086
A
did man begin
B
when man began
C
that man began
D
then man began
推荐题目
________, I believe, and you will find him very outgoing.
#92183
A
Having a talk with Tom
B
Given a talk with Tom
C
One talk with Tom
D
If you have a talk with Tom
The machine has been used many years_____ it doesn’t work well occasionally.
#94762
A
That’s because
B
It’s no wonder that
C
There’s no doubt if
D
It’s unlikely that
It was in the wooden house______ a businessman built by collecting funds______ the great scientist carried out the experiment that made a difference.
#95011
A
which; that
B
where; that
C
that; where
D
that; which