国家开展下图中所示的活动，有利于（ ）①帮助未成年人远离网络，避免诱惑②实施对未成年人的司法保护③营造健康向上的文化和社会环境④规范市场秩序，保护公民的知识产权
More than one doctor _____ involved in the rescue that took place after the earthquake．
Some hard working students always keep a torch in their dormitories _____ there is a power failure．
_____ in charge of two classes made Mrs．Li, head of Senior Grade 3, extremely tired．
Almost every teenager will experience a period in their life _____ they aren’t content with their parents．
Little did the teacher imagine that a student good at maths _____ have failed in the exam．
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