3.Large numbers of tourists visit these tourists attractions annually.

=> These tourist attractions are visited by large numbers of tourists annually.

4.They built Po Nagar Cham Towers to honour the goddess Po Nagar.

=> Po Nagar Cham Towers were built to honour the goddess Po Nagar.

5.Tourists don't visit this museum very often.

=>This museum is not visited by tourists very often

6.She bought all this cheese in France.

 =.All this cheese was bought in France by her.

7.They didn't invite me to their New Year party.

=>I was not invited to their New Year party.

8.Do they sell mineral water in plastic bottles?

=>Are mineral water in plastic bottles sold by them?

9.People consident the Imperial Academy the first university in VN.

=>The first university is considered to be the first university in Viet Nam.

10.When did UNESCO recognise HA LONG BAY as a World heritage site?

=> When was Ha Long Bay recognised as a World Heritage Site by UNESCO?