单项选择题

We learned from the show that some insects could be used as medicine, ______ ants and bees.

A．in case of
B．such as
C．just like
D．as an example
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单项选择题
There will be more than 900 graduates from this university this year, ______ only one third could work in the state-run industry.
A．from whom
B．in them
C．of whom
D．by which
单项选择题
Have you made the hotel reservation Not yet, but I ______.
A．ought to have
B．need have
C．had to have
D．would have
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