EXERCISES

Choose the right modal verb

1. There are plenty of tomatoes in the fridge. You   mustn't needn't may not should not  buy any.
2. It's a hospital. You   mustn't needn't may not don't have to  smoke.
3. He had been working for more than 11 hours. He   must need had better mustn't  be tired after such hard work. He   may should must had better  prefer to get some rest.
4. I   could might can must  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   may can must need  just say a few things in the language.
5. The teacher said we   can needn't must should  read this book for our own pleasure as it is optional. But we   could need needn't mustn't  read it if we don't want to.
6.   May Need Must Can  you stand on your head for more than a minute? No, I   may not needn't can't  .
7. If you want to learn to speak English fluently, you   could need needn't mustn't  to work hard.
8. Take an umbrella. It   need should mustn't might  rain later.
9. You   shouldn't need needn't may not  leave small objects lying around . Such objects   must need may mustn't  be swallowed by children.
10. People   couldn't needn't mustn't may not  walk on grass.
11. Drivers   could must may  stop when the traffic lights are red.
12.   May Must Should Will  I ask a question? Yes, of course.
13. You   couldn't needn't mustn't may not   take your umbrella. It is not raining.
14.   Can Need Should May  you speak Italian? No, I   shouldn't mustn't  may not can't  

https://www.myenglishpages.com/site_php_files/grammar-exercise-modals.php