It is everyone’s duty to ______ our school a pleasant place to learn in. 

 Maria ________ the interviewers with her knowledge and experience, and as a result she was offered the job.

After the heavy mudslide happened in Sichuan, hundreds of newspaper reporters were sent to ____ the natural disaster.

Men are equally as good as women at taking care of others; better ________， male nurses can be a great help in keeping patients still while they receive painful treatment.

(2013·安徽蚌埠一次质检)Finding information in today's world is easy.The ________ is how you can tell if the information you get is useful or not.