1. Mr. Hai delivers the letters everyday.
→ The letters are delivered by Mr. Hai everyday.
2. The children often buy the tickets at the box office.
→ The tickets are often bought at the box office.
3. They usually finish their homework before bed time.
→ Their homework is usually finished before bed time.
4. The teacher corrects our exercises today.
→ Our exercises are corrected by the teacher today.
5. We often watch the shows of music on TV.
→ The shows of music are often watched on TV.
6. We do a written test today.
→ A written test is done today.
7. Everyone always see the Picasso's exhibition.
→ The Picasso's exhibition is always seen (by them).
8. The workers clean the streets every day.
→ The streets are cleaned by the workers everyday.
9. Careless driving causes many accidents.
→ Many accidents are caused by careless driving.
10. Weeds cover the river bank.
→ The river bank is covered by weeds.
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