There is hardly an environment on earth ________ some species of animal or other has not adapted successfully.
A. to which
B. where
C. so that
D. as to
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The course normally attracts 20 students every year, ______ up to half will be from overseas.
A. in which
B. for which
C. with which
D. of which
___________, everyone should handle these delicate instruments with care
As was mentioned just now
B. As having mentioned just now
C. Mentioned as just now
D. As just being mentioned
It wasn’t such a good dinner _______ she promised us.
A. that
B. which
C. as
D. what
There is not tree _____ bears some fruit
A. which
B. that
C. what
D. but
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