Page 81 - 12 YDT

Exercises - Modal Verbs

C) Circle the correct option in the following table.

Doctors...

1. ---- harm any human being as they oathed. must – mustn’t – needn’t – have to

2. ---- be responsible for the care and safety of patients. must – mustn’t – needn’t – have to

3. ---- be polite to patients. must – mustn’t – needn’t – have to

4. ---- diagnose and treat the patient. must – mustn’t – needn’t – have to

5. ---- inform patients’ parents about their illnesses. must – mustn’t – needn’t – have to

6. ---- have a duty to respect their patients’ confidentiality. must – mustn’t – needn’t – have to

7. ---- work at the weekends or nights at times. must – mustn’t – needn’t – have to

8. ---- lose sight of core professional values. must – mustn’t – needn’t – have to

9. ---- discriminate between patients. must – mustn’t – needn’t – have to

10. ---- choose surgery in the first place; medication may help. must – mustn’t – needn’t – have to

D) Fill in the blanks with a suitable past form of modals.

used to should have needn’t have had to might have

1. People often _______________ light candles to illuminate homes before the invention of electric light
bulbs.

2. We _______________ wait for a very long time since there was a huge queue in front of the theatre.
3. They _______________ paid the electricity bill; they are in the dark now.
4. I don’t know where the boss went for a holiday, but he _______________ gone to Rome or Malaga.
5. The teacher has finally found the lost test papers; therefore, she _______________ retested her students
yesterday.

may have would rather not have wouldn’t have shouldn’t have would rather have needn’t have

6. The seminar was boring. I _______________ attended it.
7. Richard _______________ missed the bus. In that case, he _______________ had to take a taxi.
8. The students taking the make-up exam _______________ worried so much. Upon seeing their papers,
they realised that the questions were straightforward.

9. Instead of medicine, he _______________ studied pharmacy at university.
10. Researchers working on rats believe that they _______________ found a part of the brain that is crucial for
making decisions on the spot.

79
79