Sentence 1: Joe thought it was dark in the house. 
 Sentence 3: Joe decided to cut them back 
 Sentence 4:  He got the hedgetrimmer from the shed 
 Sentence 5:  Soon the trees were trimmed 
 Option 1: The trees had grown too close to the windows. 
 Option 2: He decided to open up some of the curtains and blinds to let light in.