Solution:
- I don't have a car, so I usually ride a bike to work.
- This exercise is very easy. I can do it in 5 minutes.
- My little sister loves the swings in the park.
- The wheel of my suitcase is broken, so I can't roll it.
- These roller skates are too small for my feet.
- This is a perfect place for a picnic – the weather is great.
- My son rides his scooter to school every morning.
- The bicycle seat is very comfortable for long trips.
Answer: ride a bike; easy; swings; wheel; skates; perfect; scooter; seat.