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4. Her sister is often given sweets by her.
5. These trees are often watered by Nam and Peter.
6. Cars are produced in this country.
7. Smoking isn't allowed in this restaurant.
8. Is the room cleaned by pupils every day?
1. Cell phones are used by a lot of people.
2. We haven't been taught by Miss Diep since the last semester.
3. Our English lessons are taught by Mr.Vinh.
4. That experiment is being done by a student.
5. We are given a free period by our teachers this Saturday to prepare the festival.
6. Was this dictionary bought two weeks ago?
7. Our teeth should be cleaned twice a day.

8. I am not impressed by Alan's knowledge about science and technology.
9. All of us are driven to school by her father every day.
10. A new school is going to be built here next year.
1. The souvenirs and postcards were sold to you at a higher price by the shopkeeper inside the Temple of Literature.
2. The students are taught by famous lecturers and tutors in the university.