Out of the given alternatives given choose the most appropriate option.
When the Principal entered the class, a student ______ on the blackboard.

Correct option is B

The correct option to fill in the blank is (b) was writing.
• Explanation:
– The sentence describes an ongoing action that was happening in the past when another action (Principal entering) occurred.
– So, we use past continuous tense for the ongoing action: “was writing”.
• Grammatical rule used:
– When two past actions occur and one is ongoing while another interrupts it, use past continuous for the ongoing action and simple past for the interrupting one.
• Explanation in Hindi:
– जब दो भूतकालीन घटनाएं हों, और एक घटना के दौरान दूसरी हो, तो जारी घटना के लिए Past Continuous और बाधित करने वाली के लिए Simple Past का प्रयोग होता है।
• Example:
– I was eating when he knocked on the door. ✅
Meanings of the other options:
• (a) wrote ❌
– English: Simple past – does not show ongoing nature.
– Hindi: लिखा
• (c) writes ❌
– English: Simple present – incorrect for past event.
– Hindi: लिखता है
• (d) is writing ❌
– English: Present continuous – incorrect tense.
– Hindi: लिख रहा है