More than one student in our class _________ to Shanghai Expo.
#103348
A
has been
B
have been
C
is
D
are
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      ---____ the paper ?--- No, I have still got one page to finish.
#103668
A
Have you done
B
Do you do
C
Did you do
D
Had you done
The theory he had stuck _______ to be true.
#104225
A
proved
B
to proving
C
to prove
D
to proved