There is no doubt ______ he will not be admitted to the room.
#93520
A
  
B
hether
C
hat
D
hich   
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I'll come to see you if _____.
#94710
A
you're convenient
B
it is convenient for you
C
you feel convenient
D
it is convenient with you
I don’t think anyone can finish the experiment, ____?
#93389
A
do I
B
can they
C
can’t they
D
don’t I
---Could you be so kind as to close the window?---______
#94272
A
With pleasure
B
Go ahead
C
Yes , please
D
That’s OK