Fill in the blanks with needn’t and mustn’t.
1You can leave when you have finished your job. You ............... wait for me.
Wrong!
Use "needn't" because waiting is not necessary.
2You ............... do it again. If you do, you will be in trouble.
Wrong!
Use "mustn't" because doing it again is prohibited.
3You don't have much time, so you ............... .
Wrong!
Use "must hurry" because there is very little time.
4You ............... enter my room without my permission.
Wrong!
Use "mustn't" because entering the room is not allowed.
5You ............... use my computer without my permission.
Wrong!
Use "mustn't" because using the computer without permission is forbidden.
6Nobody was hungry. You ............... so much food.
Wrong!
Use "needn't have cooked" because the cooking was unnecessary.
7You ............... wait until the last moment.
Wrong!
Use "mustn't" because waiting until the last moment is a warning or prohibition.
8She will arrive soon. You ............... worry.
Wrong!
Use "needn't" because worrying is not necessary.
9I can do it alone. You ............... help me.
Wrong!
Use "needn't" because helping is not necessary.
10Everything was all right. I ............... so much.
Wrong!
Use "needn't have worried" because the worry was unnecessary.
11I am not working tomorrow, so I ............... get up early.
Wrong!
Use "needn't" because getting up early is not necessary.
12You ............... tease animals.
Wrong!
Use "mustn't" because teasing animals is forbidden.
Done.
Score: 0/12
Answers
- You can leave when you have finished your job. You needn’t wait for me.
- You mustn’t do it again. If you do, you will be in trouble.
- You don’t have much time, so you must hurry .
- You mustn’t enter my room without my permission.
- You mustn’t use my computer without my permission.
- Nobody was hungry. You needn’t have cooked so much food.
- You mustn’t wait until the last moment.
- She will arrive soon. You needn’t worry.
- I can do it alone. You needn’t help me.
- Everything was all right. I needn’t have worried so much.
- I am not working tomorrow, so I needn’t get up early.
- You mustn’t tease animals.
