Умоляю 1) neither olga nor her sister (want\wants\are wanting\dont want) to go to disco tonight 2) john major (become\became\has become\had become) prime minister in november,1990 3) "who (did break\broke\broken\breaks) the window? " the teacher asked angrily 4) when the teacher came into the room, the children ( dansed\have been dansing\were dancing\had been dancing)