Chọn từ ( ứng với A ,B ,C, hoặc D ) để hoàn thành các câu sau. 11.My monitor is …………………..best at English in your class. A. Ø B. a C. an D. the 12.The effects of……….pollution is include the destruction of ecosystem of rivers, lakes and pollution of groundwater, surface water and seawater. A.wz`ater B.noise C. land D. air 13. Do you know the student ……………….won the final game “ The road to Olympia” last year? A. whom B. which C.who D. whose 14. Goverments are nowadays playing an active role in ……………protection A.environment B.environmental C. environmentally D.environmentalist 15 You can look up vocabulary in a(n) ……………. A.media player B.digital pen C.electronic dictionary D.all are correct 16. If we ………….in Australia , we would make eco tours to some National Parks there. A lived B.live C. was living D. will live cuu em vs 7h nop r a