连词成句。
（1）your, sister, what, does, do (?)
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（2）father, my, a policeman, is (.)
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（3）works, at, home, my, mother (.)
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（4）an, English, teacher, is, your, brother, too(?)
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（5）doctors, sick, people, help (.)
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（6）brother, your, has, nice, car, a (.)
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