______ a pair of compasses, it is easy to describe a circle.
#93189
A
Having
B
To have had
C
If you have
D
If having
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Not until all the fish died in the river      how specious the pollution was. 
#93485
A
did the villagers realize
B
that the villagers realized
C
the villagers did realize
D
didn’t the villagers realize
Most students expect ____more review classes before the exams.
#93563
A
it to be
B
there to be
C
that to be
D
to be
 No one can be sure _____________ in a million years. 
#95081
A
what man will look like
B
what will man look like
C
man will look like what
D
what look will man like