Future perfect образуется ВСЕГДА с помощью конструкции WILL + HAVE + VERB3
1. No, they will have moved to their new house by tomorrow
2. No, we will have made a decision by 2 o'clock
3. No. they will have finished their tests by 10 a.m
4. No, he will have graduated next autumn
5. No, he will have forfotten her by that time
6. No, he will have left for Scotland by Saturday