What is happiness to you

his story put an end to my regret for the    10   of an exploration adventure that happened last year. a group of young men  11  to explore a mountain cave and got lost.   12 to find a way out in the dark cave they were frightened and ran anxiously without a sense of   13 . finally they fell dead in fear and exhaustion (筋疲力盡). according to the  14  people that found them, the place where they got lost was only about 10 meters away from the 15  of the cave. if they stayed on the spot when they lost their way and tried to   16 themselves, they would probably sense a faint light shining not far away.
don’t you think that you can compare it with  17   itself? when you meet with obstacles (障礙) in life and work, you are lost in darkness.    18    you it’s unclear yet and you needn’t put up struggle     19    . it seems to be a negative (消極的) attitude,  20    a person who can afford to do so must have foresight as well as a great courage in the first place.   
1. a. least    b. worst   c. largest   d. shortest
2. a. service    b. way   c. order   d. work
3. a. cry    b. lie   c. wait   d. sleep
4. a. end    b. success  c. team   d. arrival
5. a. untrue    b. unimaginable c. true   d. useless
6. a. plan    b. decision  c. explanation d. excuse
7. a. physical   b. mental  c. working  d. medical
8. a. place    b. way   c. tools   d. strength
9. a. rotting    b. spreading  c. hurting  d. bleeding
10. a. difficulty   b. failure  c. hardship  d. loneliness
11. a. had    b. managed  c. tried   d. planned
12. a. willing    b. unable  c. determined d. deciding
13. a. hearing   b. sight   c. feeling  d. direction
14. a. rescue   b. village  c. local     d. brave
15. a. end    b. top   c. opening  d. side