Who wrote this draft?

This microphone has less sound attenuation.

The sound gradually attenuates.

He avoids interacting with people because he is a misanthrope.

This unprocessed sake is very strong when drunk as it is.

The appointed time is approaching, and I have to hurry to finish my work.

The source of heat for this building is solar energy.

We are looking for financial resources for the new project.

Gen yawned loudly.

They are twin brothers.