He was used to _______ up early for his morning jog.

• Used to (phrase)
English Meaning: shows that a particular thing always happened or was true in the past, especially if it no longer happens or is no longer true.
Bangla Meaning: অতীতের নিত্য বা প্রায়িক ঘটনা নির্দেশে ব্যবহৃত।

→ Be used to/get used to এর পরে noun অথবা Gerund বসে।
→ Structure: subject + be/get + used to + [verb + ing]/noun.

Complete Sentence: He was used to waking up early for his morning jog.

Source:
1. Cambridge Dictionary.
2. Accessible Dictionary by Bangla Academy.