4, я вообще не понимаю не чего!!

1. You should teach words and grammar. You shouldn't forget teaching words and grammar. 2. You should do sports. You shouldn't eat chips, drink lemonade/cola. 3. You should buy green paint. You shouldn't wash your head often. 4. You should buy ticket. You shouldn't be scare of loud music. 5. You should care of dog. You shouldn't don't care about dog.