—Howtimeflies!Wewillbeinseniorhighschool.—Soitis.Weareg...

问题详情：

— How time flies! We will be in senior high school.

— So it is. We are getting older and should __________ ourselves.

          A. be hard on   B. be responsible for   C. be thirsty for

【回答】

B

知识点：动词和动词短语

题型：选择题