填空题


Why people can’t use all of the fresh water Because some of it is _________________________.

【参考答案】

polluted
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填空题
He (work) ______in that city for eight years before he moved here.
单项选择题
A．A car.B．A cow.C．A book.D．A table.
A．A car.
B．A cow.
C．A book.
D．A table.
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