单项选择题

Questions 17~20 are based on the following moving story between a dog named Nubs and Dennis. You now have 20 seconds to read Questions 17~20. Dennis wants to do the following things EXCEPT ______.

A. to train Nubs as a fighting dog
B. to feed him dog food
C. to let him bask in the sunlight
D. to take Nubs to play on the beach