Fill in the blank : He had written the book before he ------

has retired

will be retired

retired

had retired


Description (বিবরণ) :

প্রশ্ন: Fill in the blank : He had written the book before he ------

ব্যাখ্যা:

He had written the book before he - retired.

Past perfect tense এ before এর পূর্বে past perfect tense এবং before এরপরে past indefinite tense হয়।