Question

Though my grandfather is over ninety, he ____ still read and write ?

• A. may
• B. can
• C. shall
• D. will

Answer 1

Answer:

B. can

• The modal auxiliary verb 'can' is used to express present ability or capacity.

• Context: The sentence refers to the grandfather's present physical/mental ability to read and write despite being over ninety years old.

  • can: expresses general ability in the present.

  • may: expresses permission or possibility, not physical/mental capability.

  • shall / will: express future actions, promises, or intentions.

Therefore, "can" is the appropriate auxiliary verb.