(2014年北京市西城区高三5月二模试题)25. The report aims to explain how these conclusions ______. 
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A
were reached
B
had been reached
C
have reached
D
had reached
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 —Where do you think _____ he _____ the computer?—Sorry,I have no idea. 
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A
had;bought
B
has;bought
C
did;buy
D
/;bought
I feel it is you as well as your wife that       for your son’s bad performance at school.
#102676
A
are to blame
B
is going to blame
C
are to be blamed
D
is to be blamed
-----What’s that terrible noise? -----The neighbours ________ for a party.
#102452
A
have prepared.
B
are preparing.
C
was preparing.
D
will prepare.
The managers consider it is important that everything ________ by weekend.
#99612
A
will complete
B
has completed
C
be completed
D
is completing