He was digging a hole in the garden using a spade.

His achievements in science are recognized all over the world.

I was surprised by his ingenious plan.

My child goes to a public school.

She was wearing a new perfume.

He encrypted the message using a public key.

I purchased a new car.

I purchased a new car.

Reducing greenhouse gas emissions is important for environmental protection.

There is still no specific medicine for this cold.