Use suitable auxiliary verb to fill in the blank space: Mother says you __________ to go to the market at once.

Correct answer: Have

Explanation: In this sentence, the meaning is about obligation or necessity. The correct auxiliary verb is have (‘you have to go’) because it shows compulsion, as instructed by the mother. A: Have ✅ – correct, expresses necessity or obligation. B: Are ❌ – wrong, would not make sense (‘you are to go’ changes the tone unnaturally). C: Shall ❌ – denotes future action, not obligation here. D: Will ❌ – indicates willingness or future, not compulsory instruction. Correct Answer: A. Have. ✅