Fundamental knowledge of mathematics is necessary for daily life.

He is active as a member of the House of Lords.

His recovery was miraculous.

He goes to the gym regularly.

His attitude was threatening, and I became scared.

Please open this opaque sliding door and take a look at the room.

He thought he was smart, but he remembered the proverb 'a fool may give a wise man council', and understood the importance of listening to others' opinions.

He cut the apple.

He rejoiced when he heard about the success.

He is interested in ichthyological research.