单项选择题

Some people fear thatair pollution may bring about changes inweather around the world.

A． / ; the
B．the; /
C． an; the
D．the; a
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单项选择题
Peter received a letter just now（）his grandma would come to see him soon.

A．said
B．says
C．saying
D．to say
单项选择题
Information obtained from libraries is sooner forgotten than .
A．it from life
B．that from life
C．what from life
D．which from life
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