1. (2017·日照模拟) 请认真阅读下面短文，从短文后各题所给的A、B、C、D四个选项中，选出最佳选项。
I could have easily gone through life without getting to know one of the most romantic feelings—love for a dog.
For at least ten years my 1had been suggesting that we get a dog. There were several reasons why the idea came up. We had noticed that, on our block, couples with no children as a rule 2 one large or two small dogs. So we got one puppy 3 we two had no children.
He flew into the house with the speed of a Formula 1 (一级方程式赛车). In several minutes he ran over all the house, 4 from my shoulder onto the bed, and ended up in the 5, where my wife washed him with motherly 6. From that day on, the invisible（看不见的）7 for the love of the new member of our household began at my home.
He seemed to understand that at once. Most of the meals that my wife had 8 for him with greater care than those for me—he didn't 9 look at.
Every evening I went out walking with him. I could not know who was walking whom 10 one evening, when, tired from work, I 11 the walk. The dog was very angry and dragged me out.
Last night our dog pulled me by the ear with his teeth, 12 me up in my dream, and dragged me into the kitchen to make me turn off the 13 which had disturbed（干扰） his sleep. I meekly（乖乖地） admitted that I had forgotten to switch off the light, but that was not 14 . He looked at me like a teacher at a pupil who repeatedly makes mistakes.
Now we finally know who's the 15 at home, and for twenty years we had seriously argued whether it was my wife or I.