21. Those who know how to___________ others can naturally lead a happy life.
A. approve B. tolerate C. exchange D. contain
22. As the final examinations were just around the corner, all the students in our class _____studying till midnight .
A. put up B. kept up C. stayed up D. remained up
23. The teacher along with the students ______ discussing the book Reading Skills that ______ newly published in America.
A. are; were B. is; were C. are; was D. is; was
24. Students in that school are enthusiastic about community activities ______ they can gain
experience for growth.
A. that B. when C. which D. where
