1. Our _________ anthem is sung every Monday morning. (nation)

  → Our national anthem is sung every Monday morning.

2. She is pleased with a lot of ________ for Tet. (prepare)

  → She is pleased with a lot of prepare for Tet.

3. Buses run _______ between the city and the airport. (frequent)

  → Buses run frequent between the city and the airport. 

4. ________ waves are one of the great forces of nature. (tide)

  → Tidal waves are one of the great forces of nature.

5. The tsunami _________ in December 2004 killed more than 160,000 people. (disastrous)

  → The tsunami disasters in December 2004 killed more than 160,000 people. 

6. Police have issued a __________ of the robbers. (describe)

  → Police have issued adescription of the robbers.

7. He is very ____________ towards his friends. He never helps anyone. (consider)

  → He is very considered towards his friends. He never helps anyone.

8. We are talking about the __________ of natural resources. (preserve)

  → We are talking about the preservation of natural resources.

9. Can you tell me the reason for the Mother's Day _______ ? (celebrate)

  → Can you tell me the reason for the Mother's Day celebrating?

10. A _______ faucet can waste 500 litters of water a month. (drip)

  → A dropping faucet can waste 500 litters of water a month.

11. Mount Pinatubo, which is a volcano in the Philippines, _________ in 1991. (erupt)

  → Mount Pinatubo, which is a volcano in the Philippines, eruption in 1991.

12. One of the most important ____________ for Vietnamese people is Tet. (celebrate)

    → One of the most important celebration for Vietnamese people is Tet.

1 - natinal

2 - preparation

3 - frequency

4 - tidal

5 - disastrous

6 - description

7 - considerable

8 - presercation

9 - celebratory

10 - dripping ( dripping faucet : vòi nước giọt nhỏ )

11 - eruption

12 - celebratories