1. Such crimes may be so complex that months or years go by before anyone _______ them.
　　(A) discovered (B) will discover (C) would have discovered(D) discovers
　　2. Though ________ in a big city, Peter always prefers to paint the primitive scenes of country life.
　　(A) grown (B) raised (C) tended (D) cultivated
　　3. The careless man received a ticket for speeding. He ________ have driven so fast.
　　(A) can't (B) wouldn't (C) shouldn't (D) mustn't
　　4. If people feel hopeless, they don't bother to ________ the skills they need to succeed.
　　(A) adopt (B) accumulate (C) acquire (D) assemble
　　5. If I ________ harder at school, I would be sitting in a comfortable office now.
　　(A) worked (B) were to work (C) had worked(D) were working
　　6. The shop assistant was dismissed as she was ________ of cheating customers.
　　(A) accused (B) charged (C) scolded (D) cursed
　　7. All her energies are ________ upon her children and she seems to have little time for anything else.
　　(A) guided (B) aimed (C) directed(D) focused
　　8. While crossing the mountain area, all the men carried guns lest they ___ by wild animals.
　　(A) should be attacked(B) had been attacked (C) must be attacked(D) would be attacked
　　9. Everyone should be ___ to a decent standard of living and an opportunity to be educated.
　　(A) attributed(B) entitled (C) identified(D) justified
　　10. His wife is constantly funding _______ with him, which makes him very angry.
　　(A) errors (B) shortcomings (C) fault (D) flaw

　　1. Vitamins are complex _______ that the body requires in very small mounts.
　　(A) matters (B) materials (C) particles (D) substances
　　2. Apart from caring for her children, she has to take on such heavy _______ housework as carrying water and firewood.
　　(A) time-consumed (B) timely-consumed (C) time-consuming(D) timely-consuming
　　3. Anna was reading a piece of science fiction, completely _______ to the outside world.
　　(A) having been lost(B) to be lost (C) losing (D) lost
　　4. The police are trying to find out the _______ of the woman killed in the traffic accident.
　　(A) evidence(B) recognition (C) status (D) identity
　　5. All human beings have a comfortable zone regulating the _______ they keep from someone they talk with.
　　(A) distance(B) scope (C) range (D) boundary
　　6. We have planned an exciting publicity _______ with our advertisers.
　　(A) struggle(B) campaign (C) battle (D) conflict
　　7. _______ the help of their group, we would not have succeeded in the investigation.
　　(A) Besides (B) Regardless of (C) But for (D) Despite
　　8. _______ much is known about what occurs during sleep, the precise function of sleep and its different stages remains largely in the realm of assumption.
　　(A) Because (B) For (C) Since (D) While
　　9. John doesn't believe in _______ medicine; he has some remedies of his own.
　　(A) standard(B) regular (C) routine (D) conventional
　　10. Owing to _______ competition among the airlines, travel expenses have been reduced considerably.
　　(A) fierce (B) strained (C) eager (D) critical