Câu hỏi: Choose the letter A, B, C or D the word that has the underlined part different from others.

Glass is a wonderful substance. It can be recycled over and over again. The good thing about glass recycling is that the glass retains its quality. Imagine how many bottles of soda, juice and glass jars are used daily. If we simply throw them away, the environment will suffer greatly. There are many advantages of glass recycling. The first thing is that glass recycling reduces industrial pollution. Reducing industrial pollution benefits not only the environment but also the entire ecosystem. Another benefit is the recycling of glass conserves natural resources. Recycling glass saves on the need to obtain more materials to make new glass; therefore, they save existing natural resources.

Why does recycling glass save existing natural resources?

If you turn _________ the lights when you don’t use it, you will save electricity.

They are using leaves __________ food.

Charities raise money for people who are ___________ need.

If students recycle and use recycled materials, they will save _________.