题目

When I was a boy, I belonged to the Boy Scouts（童子军），so I used to go camping every summer ,and once something happened which I have never been able to explain.We were camping in a place above a river. After arriving,we all rushed down to the river and had a swim. Standing by the river, we noticed that it was surrounded（环绕）by cliffs（悬崖）.If someone wanted to reach the river at this point, he had to past our camp.Several days later, the scoutmaster had to be away for a day. That afternoon, we had supper early. We were sitting round the fire, eating and talking, when a m 根据所给中文意思填入适当单词。(每空一词) The boy doesn't have ________ (勇气) to ask teachers for help．