Present perfect continuous (2)

Look at the sentences on the left, then modify the sentences on the right so that they have the same meaning. Use the adequate tense: present perfect simple, present perfect continuous or past simple.
1. When did you start to learn English? = How long English?
2. I started learning English four years ago. = I've been learning English years.
3. I went to the UK in 2008, and I went again last year. = I to the UK twice.
4. I first met my girlfriend in 2013.= I my girlfriend since 2013.
5. I started learning the piano when I was 12. = I have been playing the piano .
6. I started painting the bedroom three hours ago. = I the bedroom three hours.
7. It started raining this morning and it hasn't stopped yet. = it all day.
8. Is it your first trip to New York? = to New York before?
9. I started to tidy the house at 10.00, I hope I'll finish today... = I the house all morning.