Question

Fill in the blank with a suitable modal auxiliary expressing possibility:
'What shall we do?' 'There's a movie coming on T.V. We _____ watch that.'

• A. shall
• B. should
• C. could
• D. must

Answer 1

The correct option is C could

Modal Verbs show us the attitude of the speaker to what is being said or done. The term "modal" means expressing mood and mood is a way to express the attitude of the speaker

Option C is correct because it expresses uncertain ability which suits with the meaning of the question.

Whereas option A expresses certainty in performing in near future;

option B expresses correctness or obligation and option D expresses extreme obligation.