12.A.shaking　　B.lifting　　C.resting　　D.swelling 13.A.doctors　　B.strangers　　C.managers　　D.students 14.A.findings　　B.conclusions　　C.stories　　D.news 15.A.be　　B.exist　　C.stay　　D.stop 16.A.pointing　　B.returning　　C.belonging　　D.growing 17.A.get along with　　B.get rid of C.get used to　　D.get mad at 18.A.encouragement　　B.disappointment C.embarrassment　　D.achievement 19.A.ambition　　B.youth　　C.bravery　　D.experiment 20.A.in the end　　B.in total　　C.after all　　D.at any rate