1. The Bronze Pagoda is a must to see at the Yen Tu Festival, but visitors have to walk for about 6 hours to reach it. (nevertheless) 

The Bronze Pagoda is a must to see at the Yen Tu Festival, nevertheless, visitors have to walk for about 6 hours to reach it.

2. Nam and Tom arrived late; therefore, they missed the most important part of the festival. (because) 

Because Nam and Tom arrived late, they missed the most important part of the festival.

Ta có: Because chỉ nguyên nhân- kết quả

 Ta có: Nevertheless: Tuy nhiên
3.Although Mr. Lam was very busy, he spent the whole day at the Le Mat Village Festival.
4. Julia likes Vietnamese folk songs, so she goes to the Lim Festival every year.