11.Facts show that as many as 50 percent of patients do not take drugs ______ directed.
A . like      B. as       C. which       D. so
12.I walked too much yesterday and ______ are still aching now.
A. my leg muscles      B. my muscles of leg
C. my leg’s muscles      D. my muscles of the leg
13.He will have ______ 30 by the end of this year.
A. turned       B. become      C. got       D. taken
14.Macao ______ its return to China in December, 1999.
A. watched       B. found      C. saw       D. noticed
15.This hotel _______ $60 for a single room with bath.
A. charges       B. demands      C. prices      D. claims

11.B    12.A    13. A   14. C   15.A