Important people don’t often have much free time as their work ________ all their time.

y, let’s go for dinner ——Idon’t have to cook

Cindy, I don’t have a partner to practice . Would you like to be my partner— Sure. Let’s do it together.

Set down your pens when you hear the bell rings, ____ you’ll be against the rules.

It is ____ useful book. ____ book is on her desk.