Please tell me the singular form of this word.

I take classes every day.

I looked at the receipt and added up the amount of shopping.

We set up a mortgage to buy a new house.

𛄊 is one of the ancient Japanese characters.

My friend lives with a hearing dog.

The law was judged to be constitutional.

He is known as a great man of the village.

The ceremony to distribute the awards is scheduled for next week.

She announced that she is pregnant.