Find the mistakes: 1. i’m busyier than my little sister. …………………………… 2. london is more old than new york. …………………………… 3. this exercise is difficulter than that one. …………………………… 4. be activier at your lesson, please. …………………………… 5. the boy is more taller than his father. …………………………… 6. he makes more mistakes that you do. …………………………… 7. yesterday he started to feel more bad. ……………………………