1．Many students are crazy (着迷) about chatting online，which wastes them plenty of time.
2．In order to keep fit (健康的) he takes exercise every day.
3．You will have to diet (节食) before you get well again.
4．A painful (痛苦的) injury forced her to withdraw from the game.
5．Rarely (很少) have I seen such a beautiful sunset.
6．I don't think it's healthy (health) for her to spend so much time alone.
7．The president is visiting New York in connection (connect) with the trade talks.
8．She is still absent from the meeting. I'm anxious (anxiety) about her health and safety.
9．When I had a toothache (tooth), I would go to see a dentist.
10．We need people to save the injured (injure) here.
