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.

This lime sulphur is very effective in preventing pests and diseases in fruit trees.

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.