Willy (study) for 5 years when he graduates. Willy will have studied for 5 years when he graduates. .1. The dog (sleep) for 3 hours by the time I got home. 2 By Sunday, my parents (paint) the whole house. 3. We (learn) a lot by the end of the year. 4. Her sister (do) research before writing her essay. 5. (clean) everything before my brother wakes up​