Choose the correct option to fill in the gaps...
20. We’ve run out of coffee. We ............ get some tomorrow.
a) may b) must c) might
21. You ............ better go home now, it’s getting dark.
a) would b) should c) had
22. You .................. have eaten the chocolate cake, children! It was for dad’s party.
a) can’t b) might not c) mustn’t
23. A. “Why is Sue late for work?” B. “Her train ............... have been delayed due to the strike”.
a) can’t b) ought to d) might
24. You ............... bring anything; we’ve bought everything for dinner.
a) have not to b) may not c) don’t need to
25. Pam ............... have set the alarm clock since she had the day off.
a) mustn’t b) can’t c) needn’t
26. Paul asked me to check the exercises. He thought I ............... have made a mistake.
a) might b) can c) should
27. Mrs Black will get angry. I ............... have written the history essay last weekend.
a) must b) should c) may
28. I ............ take a bus to school; I go there on foot every day.
a) mustn’t b) needn’t c) shouldn’t
29. A. “I like the new TV series!” B. “Are you kidding? You ............... like it; it’s the worst programme on TV”.
a) needn’t b) mustn’t c) can’t
30. Be careful with the knife! It’s very sharp, you ............ cut your finger.
a) should b) may c) need to
