1. Our school is said to have been built 15 years ago
2. Mr Hoang's car is thought to have been stolen by someone
3. Jimmy is believed to have passed the exam last week
4. The robber is known to have left the city since last night
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Bị động đặc biệt :
- It tobe + said/believed/known/thought....+ S V
- S + tobe + said/believed/known/thought...+ to Vnt/to have VPII