Here are the best options to complete each sentence:

1. Environmental pollution is becoming an **A; increasingly** serious problem that needs to be taken care of as soon as possible.

2. Consumers have been encouraged to use **B; environmentally friendly** products.

3. Spending too much time on computers and other smart devices can cause **C; psychological** problems.

4. Recycling helps reduce the need to collect raw **A; materials** and protect the natural resources.

5. There are lots of things we can all do to **D; recycle** the environment.

6. We are going to hold a campaign to **B; protect** things like water bottles and aluminum cans tomorrow.

7. Many effective measures have been taken to **A; reduce** the level of air pollution.

8. Turning off the electrical **B; appliances** is an effective way to save energy.

9. People are reminded not to drop **D; litter** on the street.

10. The aim of the organization is to encourage people to **C; adopt** a greener lifestyle.

Let me know if you need anything else!