Complete the sentences using the words listed in the box below:
can could have to must might should
1. Ted's flight from Amsterdam took more than 11 hours. He __________________ be exhausted after such a long flight. He ____________________ prefer to stay in tonight and get some rest. (must/might)2. If you want to get a better feeling for how the city is laid out, you _____________ walk downtown and explore the waterfront. (can)3. Hiking the trail to the peak _______________ be dangerous if you are not well prepared for dramatic weather changes. You _______________ research the route a little more before you attempt the ascent. (can/must)4. When you have a small child in the house, you ____________________ leave small objects lying around. Such objects __________________ be swallowed, causing serious injury or even death. (should not/can)5. Dave: _______________ you hold your breath for more than a minute?Nathan: No, I can't. (Can)6. Jenny's engagement ring is enormous! It must have cost a fortune. (must)7. Please make sure to water my plants while I am gone. If they don't get enough water, they _______________ die. (might)8. I _______________ speak Arabic fluently when I was a child and we lived in Egypt. 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 _______________ just say a few things in the language. (could/can)9. The book is optional. My professor said we _______________ read it if we needed extra credit. But we ____________________read it if we don't want to. (could/don’t have to)10. Leo: Where is the spatula? It _______________ be in this drawer but it's not here.Nancy: I just did a load of dishes last night and they're still in the dish washer. It _______________ be in there. That's the only other place it _______________ be. (should/must/could)11. You _______________ take your umbrella along with you today. The weatherman on the news said there's a storm north of here and it _______________ rain later on this afternoon. (must/could)12. _______________ we pull over at the next rest stop? I really ______________ use the bathroom and I don't know if I _______________ hold it until we get to Chicago. (Can/must/can)13. Oh no! Frank's wallet is lying on the coffee table. He _______________ have left it here last night. (must)14. Ned: _______________ I borrow your lighter for a minute?Stephen: Sure, no problem. Actually, you _______________ keep it if you want to. I've given up smoking. (Can/can)15. I _______________ believe she said that to Megan! She _________________
insult her cooking in front of everyone at the party last night. She ______________ have just said she was full or had some salad if she didn't like the meal. (can’t/didn’t have to/should)16. Do you have to chew with your mouth open like that? Geez, it's making me sick watching you eat that piece of pizza. (have to)17. Mrs. Scarlett's body was found in the lounge just moments ago, and it's still warm! Nobody has left the mansion this evening, so the killer _______________ be someone in this room. It _______________ be any one of us!!! (must/might)18. Ted: I don't know why Denise starting crying when I mentioned the wedding.Pamela: It _______________ have been what you said about her brother. Or, perhaps she is just nervous. After all, the big day is tomorrow. (could)19. _______________ you always say the first thing that pops into your head? _______________ you think once in awhile before you speak? (Must/Can’t)20. I was reading the book last night before I went to bed. I never took it out of this room. It _______________ be lying around here somewhere. Where _______________ it be? be swallowed, causing serious injury or even death. (Must/can)
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