1 He asked me if I had visited the UK before.
Have you visited the UK before?
2 He asked why I wanted to study Italian.
Why do you want to study Italian?
3 He asked me if I had studied German at school.
Did you study German at school?
4 He asked me if I was Italian.
Are you Italian?
Are you from Italy?
5 He asked me how long I was going to stay in the US.
How long are you going to stay in the US?
6 He asked me what my surname was.
What is your surname?