题目内容：

I don,t know who broke the window
还有个句子翻译一下.IT is their buty to look after these young trees

优质解答

It is their duty to look after these young trees.
有些单词可能拼错了.如果按我这样写的话,翻译出来就：照料这些小树苗是他们的职责.