IV. Choose A, B, C, or D to indicate the option that is the best answer to each of the gaps. These days it is important to open a newspaper (21)………….. reading about the damage we are doing to the environment. The earth is being threatened and the future looks bad. What can each of us do? We cannot clean up our polluted rivers and seas overnight. Nor can we stop the (22)………….. of plan and animals. But we can stop adding to the problem while scientists look for answers. It may not be easy to change your lifestyle (23)………….. but some steps are easy to take: cut down the amount of driving you do, or use a little plastic as possible. It is also easy to save (25)………….., whichalso (24)………….. household bills. We must all make a personal decision to work for the future of our planet if we want to ensure a better world for our grandchildren. 21. A. with B. without C. and D. but 22. A. appear B. appearance C. disappear D. disappearance 23. A. complete B. completeness C. completely D. to complete 24. A. water B. energy C. money D. health 25. A. adds B. decreases C. reduces D. supplies