11 Mary has blended the ingredients.
A mixed B made
C cooked D eaten
12 They agreed to modify their policy.
A clarify B change
C define D develop
13 The economy continued to exhibit signs of decline in September.
A play B send
C show D tell
14 A notably short man， he plays basketball with his staff several times a week.
A practically B considerably
C remarkably D fairly
15 The dentist has decided to extract her bad tooth.
A take out B repair
C push in D dig
11. A 12. B 13. C 14. C 15. A