Modal verbs

There are plenty of tomatoes in the fridge. 

You ________ buy any.

It's a hospital. You _____ smoke

He had been working for more than 11 hours. He ____ be tired after such hard work.

____ you speak Italian?

You ____ take your umbrella. It is not raining.

 _____ I ask a question? Yes, of course

Drivers ____ stop when the traffic lights are red.

People ____ walk on grass.

Take an umbrella. It ____ rain later.

If you want to learn to speak English fluently, you ____ to work hard.

You ___ listen to the teacher.