Закончите разделительные вопросы и перепишите их. 1.the research was carried out under great difficulty, ? 2.we are only at the beginning of the application of atomic energy, ? 3.new york makes a great impression on all visitors, ? 4.smog can be harmful, even deadly, ? 5.architects have done some very good work in designing new schools, ?

1.The research was carried out under great difficulty, wasn't it?
2.We are only at the beginning of the application of atomic energy, aren't we?
3.New York makes a great impression on all visitors, doesn't it?
4.Smog can be harmful, even deadly, can't it?
5.Architects have done some very good work in designing new schools, haven't they?