He accidentally held her hand.

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.

He cut the apple.

He rejoiced when he heard about the success.

He is interested in ichthyological research.

Knock-knock, someone is knocking on the door.