... understand it d so that his students could understand it 25 Automobile's exhaust system gave off foul smelling fumes a erected b blew c emitted d emote 26 The environmental _ is doing harm on us ... destructible c destruction d destructive 27 Some workers are so poor that they don?t want to quit their job they are ill-treated a as though b although c since d if 28 I can't speak Chinese, ... speak Chinese, a So can't Peter b Peter can't, too c Either can't Peter d Neither can Peter 29 Pick out the word which has the underlined part pronounced differently from the rest a amount...