`13` A new hospital was built by them last year 

`->` Câu bị động thì QKĐ : S + was/were + Vpp + (by O)

`14` His exercises are done every day by him.

`->` Câu bị động thì HTĐ : S + am/is/are + Vpp + (by O)

`15` Our dog were found near the river bank

`->` Câu bị động thì QKĐ : S + was/were + Vpp + (by O)

`16` They are met by Paul at weekend

`->` Câu bị động thì HTĐ : S + am/is/are + Vpp + (by O)

`17` These patterns were designed by me

`->` Câu bị động thì QKĐ : S + was/were + Vpp + (by O)

`18` Books are aranged by her on the shelf

`->` Câu bị động thì HTĐ : S + am/is/are + Vpp + (by O)

`19` This dog was called ''Lucky'' by them 

`->` Câu bị động thì QKĐ : S + was/were + Vpp + (by O)

`20` He was bought some sweets by Mai 

`->` Câu bị động thì QKĐ : S + was/were + Vpp + (by O)

Câu bị động ( Thì HTĐ `-` QKĐ ) :

`-` Thì HTĐ : S + be + V3 / PII ( by O )

`-` Thì QKĐ : S + was / were + V3 / PII ( by O )

`13`.A new hospital was built last year

`14`.His exercises is done everyday

`15`.Our dog was found near the river bank

`16`.They are always met by Paul at weekend

`17`.These patterns were designed

`18`.Books are arranged on the shelf

`19`.This dog was called " Lucky "

`20`.He was bought some sweets by Mai

`\text{@ TheFox}`