To keep healthy,Professor Johnson ______
题型:选择题
问题:
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
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