II. Infinitive. Use particle “to” where necessary.
1) I think you ought … apologize.
2)Make him … speak louder.
3) Help me … carry this bag.
4) My son asked me … let him … go to the theatre.
5) I must … go to the country.
6) It cannot … be done today.
III. Modals. Fill in can, may, must.
1) She … translate the article into Russian.
2) He … at the Institute at 9 o’clock.
3) We … get home before it gets dark.
4) He … come tonight but I am not sure.
5) … have another cup of tea?
6) I … easily carry this bag to the station.