Sentence 1: Last year, my special needs son went trick or treating. 
 Sentence 3: I watched from a distance as he used sign language to say the words 
 Sentence 4:  He was so happy, having gotten lots of candy 
 Sentence 5:  The neighborhood was very kind to him that night 
 Option 1: He didn't enjoy it, so we will just eat our own candy at home this year. 
 Option 2: This was his first time to go trick or treating on his own.