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Before writing people used to keep records sometimes by making dots along a rope

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Before writing people used to keep records sometimes by making dots along a rope

Before writing ________ people used to keep records sometimes by making ________ dots along a rope or putting a number of stones ________.

[    ]

A. was developed, a number of; together

B. invented, many, up

C. began, a good many, in pile

D. had been recorded, a great deal of

试题答案

答案:A