单项选择题

There is hardly an environment on earth ______ some species of animal or other has not adapted successfully.

A．to which
B．wherever
C．so that
D．as to
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单项选择题
Our general manager______ ill yesterday and now he is lying in hospital.
A．took
B．caught
C．fell
D．set
单项选择题
To be frank, I'd rather you ______ in the case.
A．will not be involved
B．not involved
C．not to be involved
D．were not involved
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