Will you marry me?

He was feigning ignorance after causing the problem.

He gulped down the water, perhaps because he was nervous.

I like the unique texture of flying fish roe sushi.

I am studying the philosophy of Guanzi.

There is a newly born calf on my farm.

The study of nucleons is an important field in science.

This math problem needs to be solved using the correct operator.

Mamiko is my best friend.

What is the extension of this file?