I was surprised at his quick progress.

I am surprised at the quickness of this project's progress.

The population is rapidly decreasing.

The population is coming down.

Due to reckless deforestation, our planet is facing serious environmental issues.

In this area, reckless deforestation is progressing, and the forest is rapidly decreasing.

We should go forward.

He voluntarily took on the job.

We will contact you as soon as we confirm the progress of the construction.

We like to walk in the forest on weekends.