1.Some people believe that since oil is scarce, the ________ of the motor industry is uncertain.
A) terminal
B) benefit
C) fate
D) estimate
2.To speed up the ________ of letters, the Post Office introduced automatic sorting.
A) treatment
B) delivery
C) transmission
D) departure
3.These overseas students show great ________ for learning a new language.
A) enthusiasm
B) authority
C) convention
D) faith
4.The defense lawyer was questioning the old man who was one of the ________ of the murder committed last month.
A) observers
B) witnesses
C) audiences
D) viewers
5.Politically these nations tend to be ________, with very high birth rates but poor education and very low levels of literacy.
A) unstable
B) reluctant
C) rational
D) unsteady
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