Как из утвердительного предложения сделать вопрос в английском языке?

Did my friends goes to Great Britain last year?
Have they a chat in the Internet now?

Блин, вот двоечники-советчики!; -)
1) My friend was to Great Britain last year.
- Was my friend IN (думается мне, что этот предлог более уместен) Great Britain last year? - общий вопрос
- My friend was in (to) Great Britain last year, wasn't he? - хвостовой
- Was my friend in GB or the US last year? - альтернативный
- Where was my friend last year? - When was my friend in GB? - специальные
- Who was in GB last year? - вопрос к подлежащему
- I wonder where my friend was last year. - косвенный вопрос (? в косвенной речи)

2) Now they are having a chat in the Internet.
- Are they having a chat in the Internet now?
- They are having a chat in the Internet now, aren't they?
- Are they having a chat or writing their responses in the "Answers" in the Internet?;-)
- What are they doing in the Internet now?
- Who IS having a chat in the Internet now?
- It's interesting to know what they are doing in the Internet now.
PS Типы вопросов ко второму предложению даны в том же порядке, что и к первому.

whyyouwantakillme???)))

Where was your friend last year?
What they are having in internet?