Choose the one that best completes the sentence and write down your choice it the answer sheet.
29 how soon will it be _____robots become so intelligent that they will be able to do jobs which at the moment only human beings can do?
A before B that C when D since
30 As a senior professor she should have known better _____to get involved in such a scandal.
A and not B but not C than D than not
1 only in growth,reform and change,paradoxically enough,_____to be found.
A true security is B is true security
C true security can D can true security
9 the police guarded the airport carefully _____the criminal should escape from the country.
A or else B if C lest D unless
10 despite its lack of taste,color,odor,and calories water is _____powerful beverage.it is _____only substance necessary to all life.
A an ,an B the the C a the D the,an