On the way a book, he found some of his classmates in the street. A. to buy ; knocking down B. to buy; knocking about C. to buying ; knocking about D. to buying; knocking into 【查看更多】

 

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On the way ____ a book, he found some of his classmates ____ in the street.

A. to buy; knocking down B. to buy; knocking about

C. to buying; knocking about D. to buying; knocking into

 

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On the way _____ a book, he found some of his classmates _____ in the street.

A. to buy ; knocking down 　　 B. to buy; knocking about

C. to buying ; knocking about 　 D. to buying; knocking into

 

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