The research is so designed that once________nothing can be done to change it.
#5001
A
begins
B
having begun
C
beginning
D
begun
推荐题目
After graduation I’d like to find a job _________ I can use what I have learnt at school.
#4526
A
whose
B
which
C
that
D
where
—I’ll go camping this weekend．— .
#4519
A
Best wishes
B
No，I'm too busy
C
Don’t give up now
D
Have a good time
Some people who don’t like to talk much are not necessarily shy；they ______ just be quiet people.
#4938
A
must
B
may
C
should
D
would
.He went _________ downtown to steal diamonds, and was put into _________ prison.
#4744
A
a ; /
B
/ ; the
C
the ; a
D
/ ; /
________ you understand the rule, you’ll find English easy to learn.
#4634
A
As
B
While
C
Once
D
Whether