1. We must awaken people to the need to protect our environment.

2. All countries should establish strict laws to stop environmental pollution.

3. It is high time we did something to bring the situation under control.

4. Many factors are contributing to the deteriorating situation, such as industrial wastes pumped into the air, lakes, and rivers.

5. Air pollution has become an alarming issue worldwide, posing a serious threat to the environment and human health.

6. To govern air pollution, we need to implement environmental education to raise awareness, promote the use of new energy vehicles, and collaborate internationally.

7. We should also limit the use of chemicals in industrial and agricultural processes to reduce air pollution.

These sentences cover various aspects of addressing air pollution, from raising public awareness and enforcing strict laws to promoting sustainable practices and international cooperation.