EX7. Turn these sentences into passive. 1. My father waters this flower every morning. __________________________________________________________________________ 2. John invited Fiona to his birthday party last night. __________________________________________________________________________ 3. Her mother is preparing the dinner in the kitchen. __________________________________________________________________________ 4. We should clean our teeth twice a day. __________________________________________________________________________ 5. Our teachers have explained the English grammar. __________________________________________________________________________ 6. Some drunk drivers caused the accident in this city. ______________________________________________________________________________ 7. Tom will visit his parent next month. __________________________________________________________________________ 8. The manager didn’t phone the secretary this morning. __________________________________________________________________________ 9. Did Mary buy this beautiful dress. __________________________________________________________________________