单项选择题

If this kind of fish becomes ______, future generations may never taste it at all.

A．minimum
B．short
C．seldom
D．scarce
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______ in an atmosphere of simple living was what her parents wished for.
A．The girl was educated
B．The girl educated
C．The girl's being educated
D．The girl to be educated
单项选择题
It is essential that these application forms ______ back as early as possible.
A．must be sent
B．will be sent
C．are sent
D．be sent
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