To keep healthy, Professor Johnson ________ cycling as a regular form of exercise after he retired.
#65698
A
carried out
B
caught on
C
took up
D
made for
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When I entered, I found my father ______ on the sofa and ______ in a magazine.
#77837
A
sitting; absorbed
B
sit; absorb
C
sitting; absorbing
D
sat; absorbed
He was so poor that he couldn't afford ___ a new coat.
#80604
A
to buy his son
B
buy for his son
C
buying for his son
D
his son to buy
I_____the problem _____in my mind for a whole week before I did anything about it.
#81517
A
switched; on
B
kicked; up
C
turned; over
D
took; on