In my opinion, you can use it to define words and find more suitable words (they usually have a thesaurus built into the definition), and find words that seem more elegant or mature.
Answer:2:i sometimes have a showser after school
3:Dogs are usually friendly
4:Chris never watches tv in the morning
5:Martin hardly ever finishes his homework
6:Nicole is always on the phone
I feel that Rashad's father pushes him to join the army more than the police force because he doesn't think that'd be good for him. I think that he doesn't want Rashad to join the police force because there might be too much dicrimination towards him because of his color. He could probably get into more trouble because people would jump to conclusions about him just because of his skin color.