Ill. Fill in the blanks with appropriate modal auxiliary verbs. Choose the letter of the correct answer. 21. My grandmother is eighty-five, but she still read and write without glasses. (Ability) a. can C. may b. could d. will 22. .. I come with you? a. can c. migth b. could d. will 23. you help me with the housework, please? (Polite request) a. could c. should b. might d. will