单项选择题


A．they are
B．it is
C．they have
D．there are
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单项选择题
A．would be gettingB．should getC．will getD．shall get
A．would be getting
B．should get
C．will get
D．shall get
单项选择题
A．sinceB．afterC．whenD．before
A．since
B．after
C．when
D．before
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