Phần 1:

1. We/ will/ of/ celebrate/ the/ Mid-Autumn/ the 8th /lunar /month/ festival/ on/ the 15th day/. → We will celebrate the Mid-Autumn Festival on the 15th day of the 8th lunar month.
2. all/ Are/ traditional/ of/ the/ costumes/ dancers/ the/ wearing/? → Are all of the dancers wearing traditional costumes?
3. Traffic jams/many/ are/ countries/ cities/a/common/ and/issue/ in/ big/ towns/in → Traffic jams are a common issue in many countries and big cities/towns.
4. Viet Nam/ Banh Chung/ is/ a/ at/ traditional/in/ food/Tet/. → Banh Chung is a traditional food in Viet Nam at Tet.
5. The/ teacher/ off/ always/ lights/ reminds/ the/ room/ us/ to/ turn/ before/our/ we/ leave/. → The teacher always reminds us to turn off the lights before we leave the room.

Phần 2:

1. Let's go to Da Nang and attend the International Fireworks Festival there. (don't) → Why don't we go to Da Nang and attend the International Fireworks Festival?
2. The distance from Vinh city to Ha Tinh city is about 50 km. (it) → It is about 50 km from Vinh city to Ha Tinh city.
3. Let's go to Da Nang and attend the International Fireworks Festival there. (about) → How about going to Da Nang and attending the International Fireworks Festival?
4. What is the distance between Ho Chi Minh City and Phu Quoc Island? (far) → How far is it from Ho Chi Minh City to Phu Quoc Island?
5. I walk to school in 20 minutes (take) → It takes me 20 minutes to walk to school.
6. Electric buses are eco-friendly. They will become popular in big cities soon (so) → Electric buses are eco-friendly, so they will become popular in big cities soon.
7. She spends thirty minutes doing this test. (take) → It takes her thirty minutes to do this test.
8. In the future, robots will look after children (take) → In the future, robots will take care of children.
9. It's important for you to submit your application before the deadline. (should) → You should submit your application before the deadline.
10. She is so young, but she always gives an excellent performance (although) → Although she is so young, she always gives an excellent performance.

Phần 3:

1. When he swims, he often wears goggles to _____________________ his eyes. (PROTECTION) → When he swims, he often wears goggles to protect his eyes.
2. The Christmas tree _____________________ a long life, doesn't it? (SYMBOL) → The Christmas tree symbolizes a long life, doesn't it?
3. Tra Giang is one of the most famous _____________________ of Viet Nam. Many people love her. (ACT) → Tra Giang is one of the most famous actresses of Viet Nam. Many people love her.
4. We often _____________________ Tet holiday on the first day of the new year. (CELEBRATE) → We often celebrate Tet holiday on the first day of the new year.
5. Have you got any ideas for our party _____________________ this Halloween? (DECORATE) → Have you got any ideas for our party decorations this Halloween?
6. There are some other activities such as _____________________ shows, buffalo races and traditional games. (CULTURE) → There are some other activities such as cultural shows, buffalo races and traditional games.
7. One _____________________ of using solar energy is that it costs a lot of money. (ADVANTAGE) → One disadvantage of using solar energy is that it costs a lot of money.
8. Solar-powered ship are eco-friendly. They will not cause _____________________ (POLLUTE) → Solar-powered ships are eco-friendly. They will not cause pollution.