Sentence 1: We had a physical fitness test where we had to run 5 km. 
 Sentence 3: My friend, who was a good runner, had already finished her run 
 Sentence 4:  She ran back to me to encourage me 
 Sentence 5:  With her encouragement, I finally finished my run 
 Option 1: I felt exhausted after I was only half done. 
 Option 2: I finished in record time.