13. It takes a lot of______ to put on a school play such as King Lear.
A. organization
B. arrangement
C. management
D. preparation
14. The police carried out a(n)______ search for the mising boy.
A. complete
B. entire
C. thorough
D. whole
15. The ______ crown jewels are kept in the Tower of London.
A. valued
B. valueless
C. invaluable
D. usable
18. ______ the water left in the kettle, the doctor put several things he unwrapped from a handkerchief.
A. At
B. To
C. Within
D. Into
19. I am ______ grateful for the many kindnesses you have shown my son.
A. excessively
B. much
C. certainly
D. exceedingly
20. The ______ of AIDS has led to an expansion in research seeking a cure.
A. innovation
B. selection
C. proliferation
D. conviction