He is b____some apples in the supermarket

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He is b____some apples in the supermarket

He is b____some apples in the supermarket
He is b____some apples in the supermarket

He is b____some apples in the supermarket
buying 因为前面给了is,就是说已经给了动词,所以推断句子是现在进行时,buy后面要加ing.