... replace D knowledge 6.A decision B pollution C protection D expedition 12 13 14 15 16 17 18 19 20 II/ VOCABULARY AND STRUCTURE 21 This is a non-smoking room You ……………… smoke A shouldn’t B can’t ... other plants D About 15 0 kg of grasses ,leaves 36 37 25 IV/ VOCABULARY AND STRUCTURE 38 11 The life ……………… of a rhino in the wild is about 40 years 39 A time B span C duration D age 40 12 Bob ... About 15 0 kg of grasses ,leaves B About 3 31 kg of grasses ,leaves , and other plants C About 19 , 000 kg of grasses ,leaves , and other plants D About 15 0 kg of grasses ,leaves , and other plants...