单项选择题

The days_______ you could travel without a passport are gone.

A．of which
B．on which
C．in which
D．at which
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单项选择题
I wish we had a colour television. I'm pictures in black and white.
A．tired of
B．interested in
C．fond of
D．fed up
单项选择题
By the time you get there tomorrow, they _______ for Beijing.
A．will have left
B．are leaving
C．will leave
D．are to leave
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