Jack, ________ you ride a bike — Yes, I can.

concert__ to _ some money for thosesuffering from the earthquake, which __ 2,000 lives.

Many of us who have never been to Egypt always associate Egyptthe ancient pyramids

Is there a computer room the building— Yes. It is the ground floor.

er why the thinnest plastics bags, though ________ , are still in use here.—Well,it’s no easy job to solve this problem effectively.