1. Does he go to school? Where does he go? Who goes to school? Does he go school or to the kindergarten? He goes to schoo, doesn't he?
2. Are they reading now? What are they doing now? Who is reading now? Are they reading or writing now? They are reading now, aren't they?
3. Has she done her homework? What has she done? Who has done her homework? Has she done her homework or her presentation? She has done her homework, hasn't she?
4. Have they been doing sport? What have they been doing? Who has been doing sport? Have they been doing sport or homework? They have been doing sport, haven't they?
council workers are don't decorating the streets. (это отрицание)
Does council workers decorating the streets? (это вопрос)
Надеюсь :)