9. more likely to irritate a mountaineer or explorer than to ask them why they do it, or why they are so willing to put (9) up with danger and discomfort.
10. Mallory just didn't care any more and this was the first phrase to (10) in into his head.
11. Then again, for (11) all we know, it was simply his way of saying, 'Why not?'
12. This might seem self-evident (12) to someone like Mallory.
13. One way to look at people like mountaineers or explorers, or successful ones at any rate, is to see them (13) as people who have realised what they are good at.
14. When you read their books, more often than (14) not they will come across as people who are (15) ........ ease with their environment
15. people who are (15) at ease with their environment
16. alien it might seem to an outsider. (16) however alien it might seem to an outsider.
Ответ: 9. up; 10. in; 11. all; 12. to; 13. as; 14. not; 15. at; 16. however