Exercise 3
2.Pluto is the coldest planet.
3.The scooter is expensiver than bike.
4.The motobike is the expensivest.
Exercise 4
2.The children looked for some wood to make fire.
3.They needed some fish to cook for dinner.
4.They brought a guitar to sing songs in the evening.
5.They took binoculars to watch the birds.
Exercise 5
2.Do you have to play games? No,we don't.
3.Do you have to work hard? Yes,we do.
4.Do you have to paint pictures? No,we don't.
5.Do you have to listen to your teacher? Yes,we do.