_______________________, I would have visited you. (fill in the gap)

Correct answer: if I had known you were sick.
Complete sentence: If I had known you were sick, I would have visited you.
- এই বাক্যটি হলো একটি Third conditional sentence.

• Third conditional এর নিয়মানুযায়ী,
- Principal clause এ would have/could have/might have + verb এর past participle থাকলে if যুক্ত clause টি past perfect হয়।
- যেহেতু, প্রশ্নে উল্লিখিত বাক্যে main clause এ "would have"+ verb এর Past participle আছে, তাই If যুক্ত clause টিতে, Subject + Past perfect tense হবে।
- If + Past Perfect Tense (had + V3), Subject + would have + Past Participle (V3)

• একটি Conditional sentence এ দুটি অংশ থাকে।
- 1. Condition বা শর্ত
- 2. Consequence বা ফলাফল।

Source: A Passage to the English Language by S.M. Zakir Hussain.