Mark the letter A, B, c or D on your answer sheet to indicate the correct answer to each of the following questions 1. The generator is one of Faraday's most important_______. A. achievements B. achievement C. achieve D. achieving 2. His_______of the generator is very famous. A. invent B. inventive C. invention D. inventor 3. We will_______our English vocabulary if we read English books every day. A. rich B. richness C. enrich D. richly 4. These children have the_______to imitate animals' voice. A. able B. ability C. disable D. disability 5. Money doesn't bring_______to man. A. happy B. happiness C. happily D. unhappy 6. The teacher does everything in order to_______her students. A. courage B. encourage C. encouragement D. encouraged 7. What is his_______? -Is he American or English? A. national B. nationality C. nationalize D. international 8. You should spend your free time_______. A. useful B. useless C. usefully D. uselessly 9. Please decide what you want to do. You must make a_______ A. decide B. decision C. decisive D. decisively 10. We are discussing about a problem of great_______ A. important B. importance C. importantly D. import 11. Her_______from school without any excuse made the teacher angry. A. absent B. absence C. absently D. absences  12. The little boy felt very________because his parents did not let him go with them. A. disappoint B. disappointment C. disappointed D. disappointing 13. Your new dress makes you more________ A. beauty B. beautiful C. beautify D. beautifully 14. There are a lot of_______differences in England. A. region B. regional C. regionally D. regions 15. The surgeons tried their best to save his life, but unfortunately the operation was_______ A. success B. successful C. unsuccessful D. sucsessfully 16. You are old enough to take______ for what you have done. A. responsible B. responsibility C. responsibly D. irresponsible 17. It is_______of you to leave the medicine where the children could reach it. A. care B. caring C. careless D. careful 18. We are impressed by his______to help us with the hard mission. A. will B. willing C. willingness D. willingly 19. Although they are twins, they have almost the same appearance but they are seldom in _____ A. agree B. agreeable C. agreement D. agreeably 20. It is reported that humans are the main reason for most species' declines and habitat_______ and degradation are the leading threats. A. destroy B. destructive C. destructor D. destruction