A lot of people as well as the president of the animal protection association ____________ experiments on animals.
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A
are opposed to do
B
oppose to doing
C
is opposed to doing
D
oppose doing
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The majority of doctors ______ smoking is harmful to health.
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A
are believed
B
had believed
C
has believed
D
believe
The secretary and principal ________ at the meeting now.
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A
are speaking
B
is speaking
C
were making a speech
D
have a speech