It’s a long time since we last went out

It looks like you're working on transforming sentences into different structures, possibly for language practice. Here are the responses based on the patterns in your example:

19. It’s a long time since we last went out.
→ We haven’t gone out for a long time.

20. Alex has never eaten Turkish food before.
→ It’s Alex’s first time eating Turkish food.

21. They got married ten years ago.
→ They have been married for ten years.

22. John has played the piano for ten years.
→ John started playing the piano ten years ago.

23. This is the first time I have ever drunk rum.
→ I have never drunk rum before.

24. He started learning French six years ago.
→ He has been learning French for six years.

25. The last time I went to the museum was a year ago.
→ I haven’t been to the museum for a year.

26. This is the first time I attend such an enjoyable wedding party.
→ I have never attended such an enjoyable wedding party before.

Let me know if you need more help with this!