Today there are more airplanes________ more people than ever before in the skies.
A. carry B. carrying
C. carried D. to be carrying
______ the difference between the two research findings will be one of the worst mistakes you make.
A. Ignore B. Ignoring
C. Ignored D. Having ignored
Much time _____ sitting at a desk, office workers are generally troubled by health problems.
A. being spent B. having spent
C. spent D. spending
_________ more about Chinese culture, Jack has decided to take Chinese folk music as an elective course.
A. Learn B. Learned
C. To learn D. To be learning
After receiving the Oscar for Best Supporting Actress, Anne Benedict went
on all the people who had helped in her career.
A. to thank B. thanking
C. having thanked D. to have thanked
______in painting, John didn’t notice evening approaching.
A. To absorb B. To be absorbed
C. Absorbed D. Absorbing
