Choose the most suitable option to replace the highlighted part of the sentence.

Explanation:

The sentence
👉 “It is high time you must go home.” ❌ is incorrect.

🔍 Rule: “High time”

When we use “It is high time”, the verb that follows should be in the past tense, even though the meaning refers to the present or future.

✔️ Correct structure:
👉 It is high time + subject + past tense verb

🔁 Correction:

• Incorrect: you must go home ❌

• Correct: you went home ✔️

👉 Final sentence:
It is high time you went home.

❌ Why others are incorrect:

• must went home ❌ → grammatically wrong

• go home ❌ → present tense (rule violation)

• going home ❌ → incorrect structure

📌 Extra Facts (Exam Tips):

1. Similar Examples:

   • It is high time we started studying.

   • It is high time she left the job.

2. Important Point ⚠️:

   • Though past tense is used, the meaning is “should do now”

3. Memory Trick 🧠:
   👉 “High time = Past tense, Present meaning”

Conclusion:

👉 The correct answer is “went home.”