2 câu khuyên :

 + You should visit Da Nang city, it's really interesting.

 + You should try Banh My, it's really tasty.

3 câu bắt buộc :

 + If you want to cross the street, you must go on zebra crossing.

 + You must wear polite clothes when you want to visit pagoda. 

 + You must wear a helmet when you are riding a motorbike. 

lời khuyên :

When entering Vietnam, you must be careful when going out

You must be polite

Bắc buộc :

You must wear a mask

You must obey traffic

You have to use Vietnamese money