Change from the active to the passive voice:
1. My father waters this flower every morning.
2 John invited Fiona to his birthday party last night.
3. Her mother is preparing dinner in the kitchen.
4 We should clean our teeth twice a day.
5 Our teachers have explained the English grammar.
1. This flower is watered by my father every morning.
2. Last night Fiona was invited by John to his birthday party.
3. Dinner is being prepared by her mother in the kitchen.
4 Our teeth should be cleaned by us twice a day.
5 The English grammar has been explained by our teachers.