单项选择题

A．write it
B．write them
C．writing it
D．writing them
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单项选择题
A．ofB．andC．orD．are
A．of
B．and
C．or
D．are
单项选择题
A．The great number of people engaged in cigarette producing.B．The rapid development of cigarette-making machines.C．The rapid development of cigarette-making factories.D．The increasing output of to bacco.
A．The great number of people engaged in cigarette producing.
B．The rapid development of cigarette-making machines.
C．The rapid development of cigarette-making factories.
D．The increasing output of to bacco.
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