—He is the only one who failed in the math exam.
—Really? You mean he studies__________.
A. the most careful B. the least careful
C. the most carefully D. the least carefully
—Who does homework , Tom, Jack or Bill?
—Bill.
A. more carefully B. more careful
C. most carefully D. most careful
Mr. Black’s memory is getting . As a result, he often leaves his keys at home.
A. older B. poorer
C. greater D. better
—Hi, Diana, how was your summer holiday? — ! I enjoyed myself in the sea very much.
A. Good idea B. Wait a minute C. That’s too bad D. Pretty good
I didn’t do very well in this exam. Unluckily, he did it___________
A. worse B. badly
C. better D. worst
I like hiking in the forest because the air is pretty ______.
A. free B. dirty C. polluted D. fresh