1. I just changed my personal settings in my account. How long does it take for them to take effect?2. Your essay is full of mistakes. Please revise it and re-submit it for review.3. I like the contract, but I would like to modify it to include a new clause.4. This video tutorial will show you how to alter pants to a smaller size.
 revise modify change alterrevise 有修正的意思，modify 只指修改，可為了任何理由修改。alter 常用在更改衣物的尺寸，如例句。change 最普遍，指更改，可用在任何情況，任何事物。
Smith 先生宣誓就職成為非洲的新財政部部長。 (請填空)
Mr. Smith has been sworn in as Africa's new Minister of Fnance.