单项选择题

A．on
B．in
C．at
D．for
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单项选择题
A．areB．beC．are beingD．were
A．are
B．be
C．are being
D．were
单项选择题
A．Many ofB．A few ofC．A lot ofD．A great many
A．Many of
B．A few of
C．A lot of
D．A great many
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