This project is bogging down, making it difficult to proceed.

This project has bogged down, making it difficult to proceed.

We are planning to start a new project.

This problem is very difficult.

Starting a new project always excites me.

He recognized that the problem was turning into a muddy swamp.

We are making progress on the project.

The progress of this project is going smoothly.

I was fascinated by the beautiful melody of Shimauta, the traditional folk song of Amami.

I accidentally lost my keys.