Напишите в одном предложении 6 had предложение начинается вот так If your phrase
Student:If I had had studied better,I would become N1 in class
Teacher:If your phrase

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had been more concise, I would have been able to understand it more easily.
Parent: If I had listened to your advice, I wouldn't be in this situation now.
Friend: If I had known you were going through a tough time, I would have been there to support you.
Boss: If you had completed the project on time, we would have avoided this delay.
Colleague: If I had known about the meeting, I would have been there on time.