Sentence 1: Bobby was ready to remove his training wheels. 
 Sentence 3: Then he set Bobby off with a push 
 Sentence 4:  At first Bobby wobbled, but then he straightened out 
 Sentence 5:  Bobby was riding his bike like a grown-up! 
 Option 1: His dad did not think that Bobby was ready. 
 Option 2: His dad took them off carefully.