Sentence1: I was riding my bike to work one summer morning. Sentence2: I was a little late, so I was in a hurry. Sentence3: I was biking a little recklessly. Sentence4: To my dismay, my reckless biking caused me to get in an accident. 
 (A) I knew then that I wanted to become a professional cyclist. (B) From then on, I made sure to leave myself plenty of travel time.
B