1 Rewrite the sentences without changing their meanings.

(Viết lại câu sao cho nghĩa không thay đổi.)

1. Bioenergy as a form of renewable energy comes from natural sources.

⇒ As a form of renewable energy, _____________________________ sources.

2. We can produce bioenergy from food waste, manure, and other organic substances.

⇒ Bioenergy ___________________________ food waste, manure, and other organic substances.

3. Bacteria break down these organic substances, and methane is released.

⇒ These ______________________________ by bacteria, and methane is released.

4. We collect methane, and then use it to produce electricity and heat.

⇒ After _______________________________, it is used to produce electricity and heat.

5. We can also make methane into biomethane, called renewable natural gas (RNG).

 ⇒ Methane ___________________________, called renewable natural gas (RNG).

6. We can use renewable natural gas (RNG) as a vehicle fuel.

⇒ Renewable __________________________ used as a vehicle fuel.

7. We use bioenergy, and this limits the amount of methane released into the air.

⇒ Using ______________________________ methane released into the air.

8. We can reduce our dependence on fossil fuels by using bioenergy.

⇒ Thanks _____________________________, we can reduce our dependence on fossil fuels.

2. Use the words and phrases below, and add some words where necessary to make meaningful sentences. You may need to change the forms of some verbs.

(Sử dụng các từ và cụm từ dưới đây, và thêm một số từ nếu cần thiết để đặt câu có nghĩa. Bạn có thể cần thay đổi dạng của một số động từ.)

1. Wave energy / be the energy / come from ocean waves.

2. Most ocean waves / be formed as wind / blow over the ocean surface.

3. Wave power / be turned into electricity / use special equipment / place on the ocean surface.

4. height, length, / speed of waves determine / energy production.

5. Oceans cover nearly two thirds / earth’s surface, so wave energy / be widely available.

6. In addition, this type of energy / be very clean because / not release CO2 / any harmful gases.

7. Wave energy / be also renewable and reliable, / never run out as there / always be waves and wind.

8. In short, wave energy / be renewable and / have fewer effects / the environment.

3. Look at the incomplete leaflet. Write two paragraphs of 60-75 words each to complete it. Use the suggested ideas in 1 and 2 to help you.

(Nhìn vào tờ rơi không đầy đủ. Viết 2 đoạn văn mỗi đoạn 60-75 từ hoàn thành nó. Sử dụng các ý tưởng gợi ý trong 1 và 2 để giúp bạn.)