4.
1. I'm shorter student in my class
2.Tom is thiny then Greg
3. He's very energetic person I know
4. Clarie is more friendly than her sister
5. My brother is is better at windsurfing than me
5.
1.Your jeans is on the bed
2.Windsurfing is too difficult to me
3. She isn't old enough to drive
4. The news is on TV
5.There are a lot of people on the beach
6.
1.He takes part on tournaments
2. for
3. at
4. on
5. of