Mark was a student at this university from 1999 to 2003, ____ , he studied very hard and was made Chairman of the Students' Union.
—Your sister nearly _________ all her spare time to her study during the three years. —That’s right, or she _________ the first place in her school in the College Entrance Examination.
—I paid him 200 yuan for the sneakers. —Oh, he charged you too much. You _________ them with half the money.
The comments which he made _________ marketing bothered his boss greatly.
You must trust him; he is a man who _________ his promise.
There is such a problem _________ we all should _________.