Sentence 1: Sam was walking near the lake with his friends. 
 Sentence 3: The water was colder than they expected 
 Sentence 4:  Sam's friend found a towel for him 
 Sentence 5:  Sam dried off quickly before he could get sick 
 Option 1: One of his friends pushed him into the lake. 
 Option 2: One of his friends almost pushed him into the lake.