1. Tet is the most important festival in Viet Nam. Most Vietnanese return home for Tet. ( using therefore).
=>Tet is the most important festival in Viet Nam; therefore, most Vietnanese return home for Tet. .
2. Trang really loves to hang out with his friends.
=> Trang really fancies hanging out with his friends. ( fancy Ving: thích làm gì )
3. You are Vietnamese, you should know the story of chung cakes.
=>If you are Vietnamese, you should know the story of chung cakes.
4. All the students love the principal. He is very kind. (using because)
=> All the students love the principal because he is very kind.
5. Mr Lam was very busy; however,he spent the whole day at the La Mat Village festival.
=>Although Mr Lam was very busy, he spent the whole day at the La Mat Village festival.
=> Despite/In spite of being very busy, Mr Lam spent the whole day at the La Mat Village festival.