1. There is a large building in that square.Is there a large building in that square?Is there a large building or a restaurant in that square?There is a large building in that square, is not there?What is there in that square?2. There are various methods of research in their lab.Are there various methods of research in their lab?Are there various methods of research in their lab or in their house?There are various methods of research in their lab, are not there?What is there in their lab?3. There are four dining-rooms in the main building of the University.Are there four dining-rooms in the main building of the University?Are there four dining-rooms or four kitchens in the main building of the University?There are four dining-rooms in the main building of the University, are not there?What is there in the main building of the University?4. Some parents are always angry with their children.Are some parents always angry with their children?Are some parents always angry with their children or with their friends?Some parents are always angry with their children, aren’t they?Who is always angry with children? 5. His friend is a smart software engineer.Is his friend a smart software engineer?Is his friend a smart software engineer or a dancer?His friend is a smart software engineer, isn’t he?What is his friend?