Mai writes a letter.
⇒ A letter is wrote by mai
2. Her brother paints the house every year.
⇒ The house is painted the house by her brother every year
3. People speak English in many countries.
⇒ English is spoke by people in many countries
4. He collects these old clothes.
⇒ These old clothes is collected by his
5. She washes the car.
⇒ The car is washed by her
6. Nam reads a book.
⇒ A book is read by Nam
7. They grow rice in tropical countries.
⇒ Rice are grew by us in tropical countries