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:同步题

答案

A

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