Sentence 1: I had a violin lesson tomorrow, but hadn't practiced at all. 
 Sentence 3: I stayed up all night practicing 
 Sentence 4:  When I got to my lesson, I fell asleep while my teacher was talking 
 Sentence 5:  My violin teacher wasn't happy with me 
 Given Sentence 2: My violin teacher would be angry if I wasn't able to play well.