单项选择题


A．tiring
B．interesting
C．tired
D．interested
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单项选择题
A．sinceB．beforeC．unlessD．when
A．since
B．before
C．unless
D．when
单项选择题
You ______ television. Why not do something more active
A．always watch
B．are always watching
C．have always watched
D．have always been watching
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