21．You ______ pay too much attention to your reading skill, as it is so important.
A. cannot B. should
C. must D. needn’t
22．—I put him down for a well－educated man.
—______？
—I mean that he’s a well－educated man.
A. Speak louder, will you
B. I beg your pardon
C. What’s that
D. Will you repeat word for word
