It's a hospital. You ________ smoke.

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

I ________ speak Arabic fluently when I was a child and we lived in Morocco. But after we moved back to Canada, I had very little exposure to the language and forgot almost everything I knew as a child. Now, I can just say a few things in the language.

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

Take an umbrella. It _______ rain later.

People _________ walk on grass.

Drivers ________ stop when the traffic lights are red.

________ I ask a question? Yes, of course.

You ________ take your umbrella. It is not raining.