There is no doubt      the earth is becoming warmer.
#92981
A
whether
B
that
C
if
D
why
推荐题目
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, ____?
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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