There are numerous websites on the Internet () you can learn how to cook.

The writer's first book is () popular than his second one.

Tom is a careless person. He forgot () the door again when he went out yesterday.

We generally have four people working in the shop, but at () periods we employ extra hands.

It is expected that by 2049 the population of the city () two million.

As the manager of this new company, Charles () lots of work and almost had no time for pleasure.

If John had entered the office ten minutes ago, he () what we were talking about just now.

Your brother Frank doesn't eat cheese, () ?

Pets () constant care are not suitable for people with little spare time.

Newspapers, magazines, televisions and computers all fight to () our attention.