14.A. his B. her C. its D. their
13.A. developed B. proposed C. discovered D. found
12.A. ask B. expect C. get D. win
11.A. classmates B. friends C. neighbours D. parents
10.A. interest B. thought C. beginning D. ending
9.A. an experience B. an example C. an experiment D. a story
8. A. change B. strengthen C. become D. get rid of
7.A. truly B. really C. however D. therefore
6.A. well B. hard C. fast D. carefully
5.A. will B. should C. must D. can