【22】
A. tree
B. genuine
C. real
D. actual
【31】
A. security
B. securities
C. safety
D. safeties
【38】
A. normally
B. potentially
C. incidentally
D. readily
【36】
A. what a price a seller is
B. what price is a seller
C. what is price a seller
D. what price a seller is