Throughout Europe, and also in (21)___________ areas of the world such as India, China and parts of America, forests are (22)

Throughout Europe, and also in (21)___________ areas of the world such as India, China and parts of America, forests are (22) ________ destroyed. According to one (23)___________ , 90% of German forests will have vanished by the end of the century. This disaster is caused by (24)___________ pollution. Power stations and (25) ________ are mainly denounce- they emit gases to the air, which, after a series of (26) _________ changes, turn into toxic acids. These acids fall as” acid rain”, raising the acidity in the soil, in lake and in air to (27) __________ levels, and destroy not only trees (28)___________ also fish and other wildlife.
21. A. together B. others C. other D. another
22. A. only B. largely C. clearly D. nearly
23. A. prediction B. intention C. invention D. prevention
24. A. noise B. water C. air D. light
25. A. cars B. bicycles C. cyclists D. bicyclists
26. A. chemical B. physical C. beneficial D. manual
27. A. innocuous B. harmless C. dangerous D. safe
28. A. but B. and C. or D. however