题目内容：

“I won’t stop learning new things _________I die,” 105-year-old Zhao Muhe told domestic media.

He got his first bachelor’s and master’s degrees in his _________, and is now working on his PhD. He traveled the world after _________and learnt to use the Internet.

Zhao, born in Shandong in 1912, moved _________ Taiwan at 39, and found a non-teaching job at National Kaohsiung Normal University. Almost 30 years later, he retired from the university. That's _________ the time for people to begin a peaceful but boring pensioner's life, _________with friends and looking after grandchildren. _______that was not for Zhao.

He decided to go to _______ university, this time to study. Zhao _______the National Open University in Taiwan in 1999. He commuted to school by bike every day, never ________ a single class. He studied __________ into the night, and it only took him four years to finish the 128 academic ________ required to graduate with an arts degree, which he did at the age of 91.

Several years later, Zhao decided to ________ his studies. He passed the entrance examination for Nanhua University in Taiwan and got a __________ in philosophy two years later. He is now auditing classes at National Tsing Hua University in Taiwan __________ he prepares to earn a doctorate degree. He thinks it's __________ too late to learn.

________ studying, he also fulfilled his dream of touring the world. Now he is learning to use a ________. "Internet is no use for a dying man like ________, bro," his fellow pensioner said humorously to him. "But I'm still __________," he replied with laughter.

1.A. because    B. if    C. when    D. unless

2.A. eighties    B. twenties    C. nineties    D. thirties

3.A. adjustment    B. retirement    C. presentation    D. examination

4.A. to    B. away    C. out of    D. from

5.A. suddenly    B. gradually    C. normally    D. typically

6.A. hanging up    B. hanging out    C. hanging down    D. hanging over

7.A. But    B. And    C. So    D. For

8.A. another    B. each    C. that    D. his

9.A. arrived at    B. graduated from    C. studied    D. attended

10.A. sharing    B. refusing    C. stopping    D. missing

11.A. later    B. late    C. latest    D. lately

12.A. reports    B. lessons    C. credits    D. notes

13.A. get on with    B. put off    C. reunite    D. continue

14.A. master’s degree    B. bachelor’s degree    C. doctor’s degree    D. teacher’s degree

15.A. when    B. after    C. before    D. as

16.A. ever    B. never    C. still    D. yet

17.A. In case of    B. By means of    C. In addition of    D. In spite of

18.A. computer    B. camera    C. shaver    D. bike

19.A. him    B. her    C. you    D. it

20.A. awake    B. alive    C. asleep    D. alone