某中学开展“青少年交通安全教育日”活动,特邀请交警支队警官对全体学生开展道路交通法律法规、交通安全的知识讲座,这体现了对未成年人的( )
The _____ population has caused many serious problems.
— What did he say just now? — He asked me ________. A. when my sister came back B. when did my sister come back C. When my sister will come back
—Thanks a lot for offering me so much help! — ! A. It’s a pleasure B. With pleasure C. You’re kidding
—Did you get up early to do exercise in the morning, Bruce? —Yes, quite early. I have to it. A. used B. became used C. got used
—How terrible the pollution is here! — Yes. It is harmful ________ both humans and animals. A. for B. to C. with