Grammar Exercise with answers | Modal Verbs

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Exercise 

Choose between must or can’t:

1. There are no lights on in her house. She —mustcan’t have gone out.
2. That sounds much too cheap. It —mustcan’t be the correct price.
3. I can hear footsteps in the flat upstairs, so there —mustcan’t be someone there.
4. She is in Japan. You —mustcan’t have seen her last night at Paul’s party.
5. If you have a problem with your homeworks, you —mustcan’t ask for help.
6. He —mustcan’t be here. I can see his car in front of the building.
7. I don’t recognise any of these houses. We —mustcan’t be on the right road.
8. My phone is not in my pocket or on the table so it —mustcan’t be in the drawer.
9. You —mustcan’t be cold! It’s more than 25°C in this room.
10. That woman —mustcan’t be 40 years old. She looks about 25.

 

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ANSWERS

1. There are no lights on in her house. She must have gone out.
2. That sounds much too cheap. It can’t be the correct price.
3. I can hear footsteps in the flat upstairs, so there must be someone there.
4. She is in Japan. You can’t have seen her last night at Paul’s party.
5. If you have a problem with your homeworks, you must ask for help.
6. He must be here. I can see his car in front of the building.
7. I don’t recognise any of these houses. We can’t be on the right road.
8. My phone is not in my pocket or on the table so it must be in the drawer.
9. You can’t be cold! It’s more than 25°C in this room.
10. That woman can’t be 40 years old. She looks about 25.

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