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 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