—Peter, you delivered a wonderful speech today.
—Thanks, but I think I ______ more attention to my stage manners during that time.
A. must pay B. should pay
C. must have paid D. should have paid
______ smiling and one day life will get tired of upsetting you.
A. To keep B. Keeping C. Keep D. Having kept
—I had a fever the day before the exam, ______ I failed.
—What a pity!Good luck next time.
A. or B. so C. for D. but
______ from this point, the problem presents no easy solution.
A. See B. To see C. Seen D. Seeing
At the foot of the mountain is a well-preserved village ______ you can experience the traditional lifestyle.
A. which B. where C. that D. When
______ exercising is a good way to keep fit, you shouldn’t overdo it at the beginning.
A. As if B. As long as C. In case D. Even though
