He broke the glass carelessly.

His carelessness caused the accident.

The potential energy of this ball is proportional to its height.

He was paying attention to the teacher's talk during the class.

His usual location is the seat at the very back of the library.

This issue requires attention.

I got zero on the test.

Please turn on the light in the room.

She is good at making soufflés.

I have been to Harare.