Read the first exchange. where are the two boys? read listen and check перевод

everyone agrees that unless tiger population is protected ,they will become extinct.if it were not the efforts made by international campaigns the extinction would already have become a fact.it is time to cooperate and help to animals otherwise the future will be sad.supposing there were no tigers left in the world: how would we all feel? !

1) there isn't a bookshelf at the window.2) there aren't two girls in the room.3) there isn't an armchair by the table.4) there aren't two beds in the bedroom.