摘要：In , some people in fifties began to go to universities for education. A. 90s; the B. the 90s; / C. the 90s; their D. 90s; /

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In some people in fifties began to go to universities for education．

In ________ some people in ________ fifties began to go to universities for education．

90s; the

the 90s;/

the 90s; their

90s;/．

In ________ some people in ________ fifties began to go to universities for education．