If I had a pen , I (write) a letter, Here the right form of verb is-
A
writing
B
would write
C
will wrote
D
had written
Correct Answer: would write
Third conditional বাক্যের Structure হলো: If + subject + had + verb এর Past participle রূপ , subject + would/could/might + have + verb এর Past participle রূপ + অবশিষ্ট।