单项选择题

A．have been
B．are now
C．maybe
D．are to be
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单项选择题
A．constantB．temporaryC．rearD．continual
A．constant
B．temporary
C．rear
D．continual
单项选择题
Which of the following is not about the travel agency
A．They order transportation tickets.
B．They reserve hotel rooms.
C．They are all private.
D．They arrange for anything.
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