1. Viet Nam is an A B multicultural country with 54 ethnic groups. C D 2. When the bus arrived, we missed it because we are talking. A B C D 3. You don't have to press this button because it is very dangerous. A B C D 4. Although she was old, she tries to climb up Yen Tu Mountain. A B C ird D 5. It's is importance to preserve our traditional festivals for future generations. A B C D
