Mr Brown has three children, one of whom is a child of six,       twins of twelve.

Here are two pairs of shoes, ______ you may choose. 

-----Can I ask you a few straightforward questions about yourself?------No problem. I like______ when people are open and direct.

A smile costs _______, but gives much.

—All the volunteers were very tired, but            of them took a rest.—They were busy looking for the missing people.