Complete the following sentence:
'Had I known you were waiting outside, I _______.

Sentence টি Perfect conditional/ 3rd conditional, তাই clause- এ would/could/might + have + V₃ + extension হয়েছে। 

Had I known you were waiting outside, I would have invited you to come in.
- আমি যদি জানতাম যে আপনি বাইরে অপেক্ষা করছেন, আমি আপনাকে ভিতরে আসার জন্য আমন্ত্রণ জানাতাম।