Presuming you mean the queries on Sitesavers and not AB, then in my opinion:
70 is correct as it is.
23 Is usually one word, but am sure the answer is what we all think.
Thank you for your valued opinion Mamyalynne, but it would also be nice to have the quiz setters confirmation too, as you correctly say on Sitesavers, as you and I have clearly found suitable answers to question 70, and I don't want to waste my time finding another answer if there is a fault.
What is the point of having a query facility if the quiz setter is not prepared to answer the query? I only want a yes or no answer, and on most other quizzes, a reply is forthcoming within a few days of the question being posted.