单项选择题

He said that books on______popular science are in______short supply.

A．the; a
B．/; /
C．/; the
D．the; the
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单项选择题
A heavy snow______a good harvest year.
A．means
B．shows
C．promises
D．permits
单项选择题
Several leaves were found______when the book______me.
A．missing; returned
B．lost; was returned
C．gone; was returned to
D．disappeared; was returned to
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