Change into passive voice ( chuyển các câu sau sang thể bị động) 1.My father waters this flower every morning. ………………………………………………………………………………………………………………… 2.John invited Fiona last night. ………………………………………………………………………………………………………………… 3.Her mother is preparing the dinner in the kitchen. ………………………………………………………………………………………………………………… 4.We should clean our teeth everyday. ………………………………………………………………………………………………………………… 5.Our teachers have explained the English grammar. ………………………………………………………………………………………………………………… 6.Some drivers caused the accident in this city. ………………………………………………………………………………………………………………… 7.Tom will visit his parents next month. ………………………………………………………………………………………………………………… 8.The manager didn’t phone the secretary this morning. ………………………………………………………………………………………………………………… 9.Mary made a beautiful dress. ……………………………………………………………………………………………………………… 10.I won’t hang these old pictures.