TOEFL Grammar: Modal Verbs

1. Pregnant women who suffer from anemia ______ supplements to raise the level of iron in their blood.

    must to give

    must be given

    given

2. The study indicates that we ______ increase coverage of supplementation.

    try to

    must to try to

    should try to

3. The authors noted that their results ______ pregnant women in other low- and middle-income countries.

    might apply to

    might to apply to

    apply

4. The effect on birth weight ______ depending on the prevalence of iron deficiency.

    can vary

    can to vary

    will to vary

5. A new, low-cost tool ______ developing-world cities control pollution that kills millions each year.

    may to help

    may help

    may have to help

6. What are some of the best practices that health and emergency responders ______ in mind when using social media?

    should to keep

    should keep

    will to keep

7. I ______ rather listen to country music than to jazz.

    should

    will

    would

8. Joan was absent from school today. She ______ sick.

    could be

    can be

    could to be

9. ______ you mind if my sister joined us for lunch?

    May

    Should

    Would

10. George takes tennis lessons. He ______ play tennis.

    can

    may

    might