Sentence 1: Abe had trouble parsing a sentence. 
 Sentence 3: Abe asked his professor for help 
 Sentence 4:  She patiently walked him through some examples 
 Sentence 5:  Abe feels much more confident with his clauses now 
 Option 1: He couldn't figure out if the modifier applied to both clauses. 
 Option 2: He got a tutor to help him.