III. Supply the correct preposition to complete the passage (10 points) Most people are (1) .........the impression that doing something by a mistake is quite different (2) ........... doing something on purpose. In fact, according to some psychologists, many accidents do not, (3) .............. the whole, really happen by chance. There may be good reasons (4) ........ actions which seem to be accidental. For example, someone who fails to arrive on time for a meeting at work may be worried (5)............ his or her job, or be (6)............difficulties at home. (7)............. other words, there are often good reasons for behaviour which seems at the first to be accidental. Of course, some people are involved (8) ..................more accidents than others. These are called "accident prone". In general they either suffer(9) ...................... stress, or could have in a physical illness (10)........... knowing about it.