1.1.Do we celebrate Halloween in autumn?
1.2.Do we celebrate Halloween in autumn or summer?
1.3.We celebrate Halloween in autumn, do not we?
1.4.Who celebrate Halloween in autumn?
1.5.What do celabrate in autumn?
2.1.Did they have a very difficult test in maths yesterday?
2.2.Did they have a very difficult test in maths or history yesterday?
2.3.Yesterday they had a very difficult test in maths did not they?
2.4.Who had to a very difficult test in maths yesterday?
2.5.What did they have to in maths yesterday?