Perhaps your original question was a little ambiguous, or inaccurate. If your question is unclear - it may be hard to get an accurate answer.
Oldest unanswered questions keep on changing.
This question cannot be answered sensibly since the tides keep changing the longest length!
The answer to that question is constantly changing. Keep looking at the fixture lists on the GAA website. See the related link below.
Answering "Why does your computer keep changing the screen resolution in vista?"
use when you want to keep others from changing the worksheet (password)
In changing the sentence into a ye/no question,the verb in the change form is always plural if the question starts with do,does,did
That depends who you mean by "they"; also, what they are changing their mind about.
fairness
this is an open ended question. Is it meant to ask "How to stop people from changing wallpaper?" or "My wallpaper is changing automatically, how can I stop it?" There is no proper answer for this question in its current form.
Your question may be poorly drafted, poorly worded, doesn't make any sense, is silly the way it was asked, is insulting or just plain nonsense. Those are some of the reasons it might be changed.
keep it from changing on time
Your question is incomplete. Which what?