Make the sentences negative and interrogative:
1.My brother has a comfortable new flat.
2.I have got many friends at school.
3.My sister had a lot of toys in her childhood.
4.Children usually have lunch at school.
5.Students will have a seminar next week.
6.They had a good rest at the seaside last year.
7.His wife has to stay at home with her children.
8.I have two uncles and on aunt.
9.I had a good time last weekend.
10.They have all modern conveniences in their flat.
11.I often have a headache in the evening.
12.He has many books on History in his library.
13.The first-year students have to work hard.
14.Father has got a lot of technical books in his study.
15.We have many relatives in Moscow.

1.My brother has a comfortable new flat. 
My brother doesn't have a comfortable new flat. 
Does my brother has a comfortable new flat? 
2.I have got many friends at school.
I haven't got many friends at school.
Have I got many friends at school?
3.My sister had a lot of toys in her childhood.
My sister didn't have many toys in her childhood.
Did my sister had have many toys in her childhood?
4.Children usually have lunch at school.
Children don't usually have lunch at school.
Do children usually have lunch at school?
5.Students will have a seminar next week.
Students won't have a seminar next week.
Will students  have a seminar next week?
6.They had a good rest at the seaside last year.
They didn't have a good rest at the seaside last year.
Did they have a good rest at the seaside last year?
7.His wife has to stay at home with her children.
His wife doesn't have to stay at home with her children.
Does his wife  have to stay at home with her children?
8.I have two uncles and on aunt.
I don't have two uncles and an aunt.
Do I have two uncles and an aunt?
9.I had a good time last weekend.
I didn't have a good time last weekend.
Did I have a good time last weekend?
10.They have all modern conveniences in their flat.
They don't have all modern conveniences in their flat.
Do they have all modern conveniences in their flat?
11.I often have a headache in the evening.
I don't often have a headache in the evening.
Do I often have a headache in the evening?
12.He has many books on History in his library.
He doesn't have  many books on History in his library.
Does he have many books on History in his library?
13.The first-year students have to work hard.
The first-year students don't have to work hard.
Do the first-year students have to work hard?
14.Father has got a lot of technical books in his study.
Father hasn't got many technical books in his study.
Has father got many technical books in his study?
15.We have many relatives in Moscow.
We don't  have many relatives in Moscow.
Do we have many relatives in Moscow?