Complete the following sentences with appropriate word(s):

          1. Normally an individual thunderstorm lasts about 45 minutes, but under certain conditions the storm may _______ , becoming ever more severe, for as long as four hours.

        (a)  wane (b) moderate (c) persist (d) disperse (e) vacillate 

2   2.  Perhaps because something in us instinctively distrusts such displays of              natural fluency, some readers approach John’s fiction with ____ 

     (a)   indifference (b) suspicion (c) veneration (d) recklessness (e) bewilderment 

3    3. We lost confidence in him because he never _____ the grandiose promises he had made.

 (a)  forgot about (b) reneged on (c) tired of (d) retreated from (e)delivered on

4    4.  If you are trying to make a strong impression on your audience, you cannot do so by being understated, tentative, or __________ .    

              (a)hyperbolic (b) restrained (c) passionate (d) authoritative (e) argumentative

 5. Despite the mixture’s _______ nature, we found that by lowering its temperature in 

the laboratory we could dramatically reduce its tendency to vaporize.         

          (a) acerbic (b) insipid (c) homogeneous (d) volatile (e) resilient 

Answers of the above questions: 1. C  2.b   3. e 4. b  5. d