Task 3  Rewrite each of the following sentences with the word or phrases given in the brackets. Change the form if necessary. 1. He has obtained a good reputation for his business. (build up) 2. My little brother showed his best manners in the summer camp. (be on one’s best behavior) 3. If you have a difficult time, I’ll support and encourage you until the end. (see through) 4. Don’t throw the plastic bags away, as they may be useful sometime. (come in handy) 5. It is good for you to know what you don’t know. (pay)