Why don't you go to work by bicycle?

We must prioritize wearing helmets while riding motorbikes.

Unless this factory improves its waste management, there will continue to be a lot of water pollution.

The cup belongs to her.

The pencils belong to us.

My brother is considering riding an electric motorbike to school.

Your bicycle is more expensive than mine.

His mother was very happy because he got the first prize at the competition.

Although I was tired, I couldn't sleep.

We should definitely discuss the problem with our teacher.