Some college courses are free to _______, but others not.
A. unload
B. upload
C. download
D. loaded
I can’t go to the theatre with you tomorrow. I will be engaged ________ a meeting.
A. in
B. on
C. with
D. for
He likes to ________ in the park when he has nothing to do.
A. wonder
B. wander
C. consider
D. live