The police are conducting an investigation into the robbery.

Please pay attention to the traffic signals.

I decided to walk instead of taking the bus.

I am unable to attend the meeting tomorrow.

Regular exercise can boost your energy levels.

She stood in the middle of the room.

He is a familiar face in the neighborhood.

To whom did you give the book?

I bought a bunch of flowers for my mom's birthday.

I am taking a course on computer science.