______ different kinds of pianos, the factory is sure they can satisfy people’s need.
- Have you finished your composition yet? -- No, I'll finish it in ten minutes.
He couldn't buy the dictionary because he had ________money with him.
- Please write to me when you have time. -- Sure. But ________is your e - mail address?
We can't buy anything because _________of the shops are open at this time.
-- May I use your pen? Mine is broken. -- Of course, here are two and you can use ________ of them.