I used to hate running.It seemed too hard , and pushing outside my comfort 1 was not something I was eager to do. In fact , I wouldn't have become a(n) 2 if it weren't for my husband Charles.He had been a 3 , competitive runner for many years.After our marriage , he wouldn't stop talking about how much he 4 it. So he picked it up again , and after about a year , I started to join him at the 5 . Just a few weeks later , Charles signed up for a five­kilometer race for both of us.I 6 about doing it.It was too soon. But on the race day , there I was. The gun went off.Thousands of runners 7 . The first kilometer was tough.I was already breathing 8 and painfully aware of the group of runners 9 past me. After another minute I saw the three­kilometer 10 . All I could think of was that I was 11 . I rounded a corner , and saw both sides of the street 12 with people watching the race , all cheering the runners on : I 13 my legs to keep going. Then I looked up and saw the clock.The 14 ticking away gave me an incentive( 动力 ) . I knew that if I had 15 finished this race I would have achieved something.So , I 16 up , and kicked it. I had my arms 17 higher when I passed through the finish line.A volunteer put a(n) 18 around my neck. “You did great ! I'm so proud of you ! ” Charles was thrilled that I'd 19 . “That was amazing ! I want to do another race.”I proudly hugged my medal as we started to walk to the post­race festivities.My lungs and my comfort zone both 20 . 1 . A.block B . line C . emotion D . zone 2 . A.wife B . coach C . expert D . runner 3 . A.serious B . common C . casual D . sharp 4 . A.hated B . missed C . admired D . trained 5 . A.race B . department C . track D . ceremony 6 . A.hesitated B . puzzled C . cared D . brought 7 . A.slipped away B . backed offC . pushed forward D . came over 8 . A.mildly B . shallowly C . gently D . heavily 9 . A.running B . bending C . reaching D . pacing 10 . A.symbol B . mark C . pattern D . campaign 11 . A.hopeful B . speechless C . dying D . moving 12 . A.stuck B . crowded C . provided D . directed 13 . A.sunk B . bent C . shook D . willed 14 . A.seconds B . titles C . criteria D . competitors 15 . A.also B . actually C . just D . unfortunately 16 . A.dressed B . came C . stayed D . straightened 17 . A.kept B . crossed C . held D . tied 18 . A.rope B . medal C . necklace D . award 19 . A.got it B . meant it C . made it D . defeated it 20 . A.trembled B . Expand