Directions : The following items have one part of a sentence followed by four alternatives. Complete the sentence by choosing the correct alternative and mark your response on the Answer Sheet accordingly.

“It is getting dark, 

The correct answer is "must I turn on the lights ?".

Key Points

• The sentence implies that it is becoming dark, and the speaker needs to decide whether they should turn on the lights or not.
• The word "must" in the first alternative indicates that the speaker believes it is necessary to turn on the lights.
• This implies that the situation has become too dark to see properly and turning on the lights would be essential.

The correct answer is: It is getting dark, must I turn on the lights?

Additional Information

• The other alternatives are less appropriate in this context. 
  • "Should I be turning the lights?" is grammatically correct but it sounds awkward and unnatural. 
  • "May I be turning on the lights?" is grammatically correct but it does not convey the urgency of the situation. 
  • "Can I turn on the lights?" is grammatically correct, but it does not express the necessity of turning on the lights, which is the most suitable option in this context.
•  A modal auxiliary represents ability, permission, necessity, and degree of certainty. 
• These are always followed by the simple form of verb.
  • ​Example: can, may, might etc.