Complete the following sentences using an appropriate modal auxiliary verb.
1. The police warned the mob that they …………………… start firing, if they created trouble. (could / would / might)
2. Passengers …………………… not smoke on the bus. (must / can / should)
3. ……………………. I have a word with you? (Can / will / should)
4. Parents ………………………. accompany their children to the school. (cannot / may not / would not)
5. There was a time when I …………………… read till midnight, but these days I go to bed early. (used to / should / ought to)
6. You ………………… not tell me. I know everything. (need / can / must)
7. I have promised to keep this secret. I …………………… disclose it to anyone. (cannot / would / may)
8. ……………………. I tell you what happened? (Shall / Will / Would)
9. How long ……………………. you take to complete this job? (will / shall / can)
Answers
1. The police warned the mob that they would start firing, if they created trouble.
2. Passengers must not smoke on the bus.
3. Can I have a word with you?
4. Parents cannot accompany their children to the school.
5. There was a time when I used to read till midnight, but these days I go to bed early.
6. You need not tell me. I know everything.
7. I have promised to keep this secret. I cannot disclose it to anyone.
8. Shall I tell you what happened?
9. How long will you take to complete this job?
