Debbila, I don't understand . I thought we must find ONE word which relates to the three clues. Computers and walks are TWO words. Anyway how does COMPUTERS relates to UNAVAILABLE and ALONG??
The reply to the first 2 clues is a noun with the same meaning.
The reply to the third clue is a verb with another meaning often used before the word question, i.e.
to ---- a question;
Very easy really :hellocomputer: