I ____________ a picture when my mother came back from work.
A. drew B. draw C. am drawing D. was drawing
The boy often tries his best ___________ his parents happy.
A. to make B. make C. making D. made
It is hard for him to stop __________ though he has had a lot of diseases.
A. smoke B. to smoking C. to smoke D. smoking
It’s dangerous ____________ with the wild animals.
A. to play B. played C. playing D. play
Tom enjoy ___________ photos. He always goes out with their cameras.
A. take B. took C. to take D. taking
—Would you please lend me some paper?
—Sorry, but we have all the paper.
A. given up B. put up
C. used up D. stood up
