Which room do you like the best in your house? Why?

The book ____ I bought at the bookstore yesterday is expensive.

Every month, scientists invent new gadgets and ____ to help us with our daily lives, and discover ways to make existing technology faster and better.

You never work more than you have to, _______?

Alaska ______________.

Find one mistake in each following sentence.

If you try these cosmetics, you look five years younger.