1) There's a ticket ... on the train platform; you can get your tickets from there. a) equipment b) machine c) device 2) Presidents from all over the world have signed an environmental ... that agrees to reduce poisonous fumes worldwide. a) viewpoint b) challenge c) treaty 3) Do you think there will ever come a time when roboits can ... important decisions on their own? a) make b) design c) create 4) A team of expert ... will decide which invention is original enough to win first prize. a) helpers b) assistants c) judges

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