指出下面句子中mark的词性和词义. In the test the teacher marked all my answers right．

I my friend to give up smoking, but he just turned...

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You’d better have your bike , or it’ll get you i...

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Great changes in my hometown in the past few years...

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--- What happened to you? --- I was lost in the st...

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You might say that one reason why Barack Obama is ...

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