21. It’s _____ tradition for the Chinese to honor the dead through ______ way of celebrating ______Tomb-sweeping Day.
A. a; the; the B. the；a；the C. the；a；／ D. a；the；／
22. It was foolish of the student to _______ his notes during the important test, and as a result, he got punished.
A. refer to B. settle down C. account for D. bring out
