There are many volunteers _________ are helping the children in Sichuan.

A ruler is 2 dollars and a pen is 3 dollars. How much are they? —They are ________.

Each of the club members ________ready to help those who were in trouble.

Jim, what are you _______?—A dog. It is playing with a ball on the floor.

They argued ________each other _________ where to spend the golden week.