. ______ it is true that a student’s most important goal is to do well in his or her studies, it doesn’t need to be the only goal.
Mary wrote books to earn money while John gained his wealth _________ selling Mary’s works.
I hated it when people don’t ___________ their promises.
________ hard he tried, he could not change his wife’s mind.
------I don’t know why he has made such a silly mistake in the exam. ------ He ____________ it before he handed in the paper.
Read the passage a second time, ___________ the meaning won’t become clearer to you.