21st Century is ______ a newspaper; it helps us know a lot about the world.

My brother is one of _________ in Class Three.

Hurry up! Alice and Sue are waiting for you at theschool gate — Oh! I thought they _____ without me

Today’s teens don’t see anything strange in the fact _______the computer takes up a central place in their social lives.

Last summer I took a course on ________.[ ]