31.The tourist will be prevented from entering a country if he does not have ____ passport.
A)an operative
B)a valid
C)an efficient
D)an effective
32.With prices ____so much, it’s hard for the company to plan a budget.
A)fluctuating
B)waving
C)swinging
D)vibrating
33.If you suspect that the illness might be serious you should not ____ going to the doctor.
A)put off
B)hold back
C)put aside
D)hold up
34.All the information we have collected in relation to that case ____very little.
A)put off
B)hold back
C)put aside
D)hold up
35.A really powerful speaker can ____ the feelings of the audience to the fever of excitement.
A)work out
B)work over
C)work at
D)work up
36.Some teenagers harbor a generalized resentment against society , which ____ them the rights and privileges of adults, although physically they are mature.
A)deprives
B)restricts
C)rejects
D)denies
37.Though ____ in San Francisco, Dave Mitchell had always preferred to record the plain facts of small-town life.
A)raised
B)grown
C)developed
D)cultivated
38.Achieving a high degree of proficiency in English as a foreign language is not a mysterious ____ without scientific basis.
A)process
B)practice
C)procedure
D)program
39.We cannot always____ the wind , so new windmills should be so designed that they can also be driven by water.
A)hang on
B)count on
C)hold on
D)come on
40.Craing assured his boss that he would ____all his energies in doing this new job.
A)call forth
B)call at
C)call on
D)call off