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单项选择题

A．The air is polluted.
B．The people there are terrible.
C．It’s too windy.
D．The beaches are dirty.
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单项选择题A．They were both busy doing their own work.B．They waited for each other at different places.C．They went to the street corner at different times.D．The man went to the concert but the woman didn’t.

A．They were both busy doing their own work.
B．They waited for each other at different places.
C．They went to the street corner at different times.
D．The man went to the concert but the woman didn’t.

单项选择题A．The effects of the flood.B．The heroic fight against a flood.C．The cause of the flood.D．Floods of the past twenty years.

A．The effects of the flood.
B．The heroic fight against a flood.
C．The cause of the flood.
D．Floods of the past twenty years.