you are familiar with the author’sideas, try reading all the sections as quickly as possible

Do you play _____ piano in your free time–No, I like sports. I often play _______ chess with my classmates.

We are at your service. Don’t to turn to us if you have any further problems.

We can gain valuable wisdom from mistakes which ______ to prevent them from happening again.

ws shocked the public, _______to great concern about students’safety at school