11. Lower taxes would spur investment and help economic growth.
A. attract
B. encourage
C. require
D. spend
12. He was kept in appalling conditions in prison.
A. critical
B. temble
C. necessary
D. normal
13. I can't put up with my neighbor's noise any longer, it's driving me mad.
A. measure
B. generate
C. tolerate
D. reduce
14. The project required ten years of diligent research.
A. hardworking
B. scientific
C. basic
D. social
15. He was rather vague about the reasons why he never finished school.
A. unclear
B. bright
C. bad
D. general