连词成句。(注意标点符号及字母的大、小写)

1. a, sell, goods, we, price, these, good, at, very

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2. green, they, in, coats, have

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3. do, you, to, what, want, buy

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4. hat, his, have, sister, does, red, a 

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5. sells, store, which, vegetables 

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电流通过导体会产生热，对这种现象称为电流的（）