Modal Verbs

1) There is plenty. of tomatoes in the fridge. You ____ buy any.
2) It's a hospital. You ____ smoke in here!
3) He had been working for more than 11 hours. He ____ be tired after such hard work. ____ we make him a drink?
4) I ___ speak Arabic fluently when I was a child and we lived in Morocco.
5) The teacher said we ___ read this book for our own pleasure as it is optional.
6) ____ you stand on your head for morethan a minute? No, I ____ you?
7) If you want to learn to speak English fluently, you ____ work harder.
8) Take an umbrella. It ___ rain later.
9) Don't leave small objects lie around. They ____ be swallowed by children.
10) 20 years ago people ____ write letters to communicate with each other.
11) Drivers ____ stop when the traffic lights are red.
12) ___ I ask a question? Yes, of course, you ____.
13) You ___ buy this dress. It’s fabulous.
14) ___ I come in now or ___ I wait a little longer?
15) You really ____ smoke this much, it will kill you some day.

Thanks for answer:)