1 . Both apps have a number of functions and ________ the steps we take.
这两个应用程序都有一些功能，可以追踪我们所采取的步骤。

2 . Some people feel that high school students can ________ taking part in organized sports.
一些人认为中学生可以从参加有组织的体育活动中获益。

3 . When I ________ tough times last year, it was my teacher who offered me help.
当我去年经历艰难时期时，是我的老师给予我帮助。