He lives in a city ________ Tianjin.

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Do you live ________ floor?

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We are busy. We have a lot of ________.

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Your bike is cheap, Jim's is ________. Hers is ________ of all.

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Kate ________ hard at school every day.

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Children often have a good time in a park ________ Sundays.

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You'd better ________ on foot. It's so far away from here.

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Workers ________ new machines in this factory.

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You must ________ when you cross (穿过) the streets.

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Jim is ________ brother.

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