Students sometimes support themselves by _______ of part- time jobs.
Most parents still hold the view______students should first put their hearts into their lessons.
-Why has she pulled a long face to me?-Well, she seems to______about what you said about her.
Are they still doing the experiment? They're supposed______it by the end of last class.
-Hi, I didn't know you had come back! Have you finished your teaching in America?-Yes. I______Chinese there for more than two years.
Better be more careful______you've made a mistake.