To keep healthy, Professor Johnson _____ cycling as a regular form of exercise after he retired. [ ]

题目简介

To keep healthy, Professor Johnson _____ cycling as a regular form of exercise after he retired. [ ]

题目详情

To keep healthy, Professor Johnson _____ cycling as a regular form of exercise after he retired.
[     ]
A. took up
B. caught on
C. carried out
D. made for
题型:单选题难度:中档来源:上海高考真题

答案

A

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