The research is so designed that once _____ nothing can be done to change it.
#84615
A
begins
B
having begun
C
beginning
D
begun
推荐题目
Gone ________ when we were oppressed.
#79537
A
are the days
B
the days are
C
the days have
D
the day is
the key to the car when my boss came towards me.Finally I could drive himhome as usual.
#82933
A
Never had I found
B
Seldom did I find
C
Hardly had I found
D
No sooner did I find
Only after Mary read her composition the second time ____ the spelling mistake.
#79633
A
did she notice
B
she noticed
C
does she notice
D
she has noticed
So far as I am concerned, he is a determined man and on no account ______ die easily.
#80477
A
he says
B
he does say
C
says he
D
does he say
________ change your mind, do let me know.
#79528
A
If should you
B
Should if you
C
Should you
D
You should