It was high time we ---- our habits.

It was high time we ---- our habits. Correct Answer Had changed

It is high time- এরপর sub আসলে - এরপর verb - এর past form ব্যবহৃত হয়। Change এর past form হলো changed। এবং It was high time  এর প‌রে had + v হ‌বে।
Bissoy MCQ