1. some people saw a UFO in the sky above London last night >> A UFO was seen in the sky above London last night by some people ( past simple)
2.Experts are looking at them now >>.They are being looked by experts ( present continuous )
3. Somebody has stolen a bus from outside the school.>> A bus has been stolen from outside the scool ( present perfect )
4. These children see a thief .>> The thief is seen by these children ( present simple )
5. He will deliver the parcels >> The parcels will be delivered by him ( future simple )
6.He will have bought the car >> The car will have been bought by him ( future perfect )
7. I should do my homework >> My homework should be done by me ( modal)
8. The child was reading a newspaper >> The newspaper was being read by the child ( past continuous )
9. I had cleaned my room >> My room had been cleaned by me ( past perfect )
10 . The student must include pictures >> The pictures must be included by the student ( modal -must )
