这个男孩足够勇敢说出了真相
the boy was —— ——to tell the truth
也许你会为他们不能找到解决空气污染问题的方法而担心
maybe you fear that they won't—— ——to find the solutions to the problem of air pollution
昨晚的电视节目是我的姐姐想起来两年前在山村支教的经历
the tv problem last night ——my sister—— as a volunteer teacher in the mountain village two years ago