It is I who _______ responsible for my own happiness.

• Relative pronoun (who, whom, which, what, when, whose, how, that) থাকলে Antecedent (Relative pronoun এর পূর্বের Noun/pronoun) অনুযায়ী verb বসে।
যেমন:
- It is I who am to blame.
- It is you who are to leave.
- It is he who is to go.

- প্রশ্ন প্রদত্ত বাক্যে who এর পূর্বে Antecedent ‘I’ থাকায় শূন্যস্থানে am বসবে।
- Complete sentence: It is I who am responsible for my own happiness.