11.The injury of their key player could be a(n) __________ factor in the game. 
A. decisive			B. decision 		C. decided 			D. decisively
12.Britain’s poor economic performance was a cause for the growing public ________. 
A. complain			B. terrible 		C. heap				D. concern
13.__________ measures should be taken to prevent such accidents. 
A. Efficient			B. Effective		C. Relevant			D. Virtually
14.Although there were only 4 horses ________ , it was an exciting race.
A. competing 			B. issue	 		C. bond	 			D. run
15.One of the __________ qualifications for entering this company is to hold a master’s degree. 
A. essential			B. initiative		C. talent				D. obviously