Sentence completion: If I had known you were coming,_____.

Correct Sentence: If I had known you were coming, I would have gone to the station.

- এটি Third Conditional Sentence.
- Third conditional অতীতের কোনো unreal বা impossible condition বোঝাতে ব্যবহৃত হয়।

• Third Condition এর নিয়ম অনুসারে:
- If বা Had যুক্ত দুটি clause থাকে।
- দুটি Clause এর যেকোন একটিতে If/ Had দিয়ে Clause টি শুরু হবে।
- If বা Had যুক্ত Cause টি Past Perfect Tense হয়।
- ২য় Clause টি Past perfect Conditional (would have, might have, should have, could have) বসে।
- Verb এর Past Participle form বসে।

Other Options:
খ) I would go to the station - Second conditional structure-এর মতো; এখানে Past Perfect আছে, তাই ভুল।

গ) I had gone to the station - Past Perfect হলেও main clause-এ third conditional-এর জন্য would have gone দরকার।

ঘ) I will go to the station - Future tense; অতীতের unreal condition-এর সঙ্গে যায় না।

Source:
1. A Passage to the English Language, S.M. Zakir Hussain.
2. English Wizard by Live Publications.