Directions: Choose the appropriate modal to complete the sentence. My…

Solution The correct answer is 'used to'.

Why 'used to' is correct:

'Used to' indicates an action or state that happened regularly or habitually in the past but no longer does.

• It matches the sentence because it describes a past habit: grandparents telling bedtime stories during childhood.

Why the other choices are incorrect:

• 'will' refers to future actions, promises, or willingness and does not express a past habitual action.

• 'shall' is formal and used for offers, suggestions, or legal/formal statements; it is not used to indicate past habits.

• 'may' expresses possibility or permission, not habitual actions in the past.

Correct sentence:

My grandmother used to tell us bedtime stories.