Câu trả lời:
1. He often does exercises every night.
→ Exercises are often done by him every night
2. She usually decorates the room at weekends.
→ The room is usually decorated by her at weekends
3. Daisy always sings country songs.
→ Country songs are always sung by Daisy
4. She often gives her sister sweets.
→ Her sister is often given sweets by her
5. Nam and Peter often water these trees.
→ These trees are often watered by Nam and Peter
6. They produce cars in this country.
→ Cars are produced in this country