21． The peaches are so delicious. I’d like ________ third one because ________ second one is rather small.
A. a; the B. a; a C. the; a D. the; the
22． —What’s his monthly income?
—Well, he ________ earn as ________ as 4,000 dollars a month when his business runs well.
A. can; much B. might; many C. must; far D. should; high
23． It is ________ of a bride to throw the flowers in her hand to the wedding guests.
A. fortunate B. typical C. ordinary D. generous
24． ________ great use the students are making of time ________!
A. How; studying B. What; studying
C. How; to study D. What; to study
