Fill in the blank with the correct option.
You must _______ your passport at the airport before departure.
Show answer & explanation
Correct answer: A
Explanation
Correct Answer: show
Explanation:
• The given sentence contains the modal auxiliary verb must.
• Modal verbs (like must, can, could, may, might, should, will) are always followed directly by the base form of the main verb (V1).
• show is the base form (V1), making it the grammatically correct choice.
Quick Tip: Modal auxiliary verb + V1 (base form of the verb).