... 8:D, 9: A, 10:C, 11:B, 12: C, 13:C, 14:B, 15:D, 16:D, 17:C, 18:B, 19: B, 20:A, 21:A, 22:D, 23:A, 24:C, 25:C, 26:C, 27:A, 28:c, 29: B, 30:D, 31:D, 32:C, 33:D, 34:A, 35:A, 36:D, 37:C, 38:C, 39: A, ... bang which could be heard all over the town. A.on B.up C.off D.out 29/ Chemical wastes from factories……………… the rivers in this region. A.prevented B.polluted C.conserved D.protected 30/In ... D.going 39/ They could have bought more cattle if………………… . A.the flood hadn’t swept through B.they were rich C.they don’t have to save up D.they had more money 40/When the storm… this area...