I prefer action film _____ comedy film.
A. from
B. in
C. at
D. to
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I spent my spare time _____ computer games.
A. to play
B. playing
C. played
D. play
It is a waste of time _____ boring things.
A. to do
B. doing
C. did
D. done
I like doing math exercise; it _____ my mind busy.
A. to keep
B. keeping
C. kept
D. keep
What will you do _____ your spare time?
A. to
B. of
C. on
D. in