{"answers": "D", "options": ["m : but i do n't think the required number is a problem for the teachers who are picking plastic bags .", "m : that make sense . but those plastic is clean , they are safe to children .", "m : do n't worry . they got plenty fo time to finish their homework after picking up all the bottles .", "m : yes , you are right ! viruses can be dangerous to young pupils sometimes !"], "article": "f : what are the pupils doing there ? they 're picking up the plastic bags on the street , but the plastic bags are so dirty . m : they are doing that to remind people to protect the environment . you know , the white pollution is so serious these years . f : of course i know , but the pupils are young and there must be some viruses which are bad for them . our hospital has many children falling sick because they pay a little attention to cleaning .", "id": "train_4086"}