Sentence 1: Robert had so much homework he didn't know how he would do it all. 
 Sentence 3: He stayed up late but still didn't finish it all 
 Sentence 4:  He got up early to work on his English report 
 Sentence 5:  Later at lunchtime, he finished the rest of his work 
 Given Sentence 2: Angrily, he called his friends and cancelled plans to see a movie.