Ответ:

1. I had a large family

I will have a large family

2. He had many friends

He will have many friends

3. She had an elder sister

She will have an elder sister

4. They had a language laboratory

They will have a language laboratory

5. We had an interesting work

We will have an interesting work

6. Had you a flat ?

Will you have a flat?

7. I had no bad marks

I will have no bad marks

8. We had no problems

We will have no problems

9. I had got many classes every day

I will have got many classes every day

10. She had got a new dress

She will have got a new dress