题目内容：

    Humans always learn a lot from animals. Once I gave up working as a researcher in Yellowstone National Park to stay with Shira, my old _______, until she dies. The time I spend with her now has become the most _______ time of my life so far. As dog owners, we get _______ when we know that our pets are getting _______ . How much time left do we have? We don't know when the end is coming ._______， we can live happily and love completely. And we can make every moment of _______ with our pets become the most valuable moment of our lives. To change our _______ and achieve perfection(完美), from time to time we _______ too much time and money, while dogs don't _______ their appearance. Instead, they are quite __________ with the gifts that nature gave them. This makes their lives very __________. When we get older, we're probably __________ to give up things that aren't __________ to us any more, because we know we can't take them with us when we die. For Shira, happiness is __________ going for a walk, and getting food. She takes __________ in the simplest things. Old dogs make us __________ how important the time that we spend with our loved ones is and make us enjoy every __________. When our dogs grow old, we have to learn to __________ the unexpected things, to deal with the __________ of our lives, and to live every minute. In order to live a meaningful life, we must beat the fear of __________ someone.

1.A.partner B.dog C.classmate D.cat

2.A.valuable B.boring C.stressful D.awful

3.A.excited B.nervous C.strange D.afraid

4.A.ugly B.beautiful C.old D.weak

5.A.However B.Besides C.Finally D.Otherwise

6.A.staying B.working C.competing D.fighting

7.A.diet B.appearance C.opinion D.style

8.A.consider B.afford C.save D.spend

9.A.care about B.speak of C.think of D.complain about

10.A.angry B.patient C.careful D.satisfied

11.A.simple B.difficult C.busy D.boring

12.A.lucky B.sad C.ready D.surprised

13.A.ordinary B.traditional C.harmful D.necessary

14.A.even B.just C.still D.already

15.A.part B.pity C.pleasure D.pride

16.A.prove B.imagine C.predict D.realize

17.A.place B.book C.moment D.party

18.A.avoid B.accept C.refuse D.offer

19.A.illnesses B.changes C.chances D.persons

20.A.meeting B.helping C.losing D.knowing