单项选择题

As a biologist and ecologist, he is ______ all forms of hunting.

A．against
B．down
C．back
D．off
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单项选择题
Her hair and coat were wet because it______.
A．would be raining
B．had been raining
C．would have been raining
D．had rained
单项选择题
Under no circumstances ______ leave his post.
A．a soldier mustn't
B．a solider must
C．mustn't a soldier
D．must a solider
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