There is no doubt ________ Tom is a good clever boy.
#93495
A
whether
B
if
C
when
D
that
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Statistics show that men have _____ as women do for every mile they drive.
#93537
A
serious accidents as twice many
B
twice as many serious accidents
C
twice serious accidents as many
D
serious accidents as many twice
Can you tell me ___________________? You look upset. 
#93622
A
what the matter is
B
what matter it is
C
what is the matter
D
what was the matter
It was not until the teacher had explained it three times _______ how to work out the problem.
#92129
A
did he understand
B
had he understood
C
that he understood
D
that he didn’t understood
Today’s China is quite different from __________.         .
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A
it used to be
B
it would be
C
what it used to be
D
what it would be