单项选择题

A．Because some book in the library are very expensive.
B．Because some books in the library are rare.
C．Because sometimes students need certain materials urgently.
D．Because some students won’’t return the books they borrow.
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单项选择题
A．There are many visitors there.B．There are many students there.C．There are many old streets there.D．There are many bicycles there.
A．There are many visitors there.
B．There are many students there.
C．There are many old streets there.
D．There are many bicycles there.
单项选择题
A．The manager wasn’’t in the office.B．The manager was so demanding that he was afraid to speak out.C．The manager didn’’t give him a chance to talk.D．The manager is always on the road.
A．The manager wasn’’t in the office.
B．The manager was so demanding that he was afraid to speak out.
C．The manager didn’’t give him a chance to talk.
D．The manager is always on the road.
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