The children should go to school instead of to support their families.
A、toworkD
暂无解析
How long have you____?
Nowhere in nature is aluminum found free, owing to its always ____ with other elements, most commonly with oxygen.
汉译英：朋友之间，情趣相投、脾气对味则合、则交，反之，则离、则绝。朋友之间再熟悉、再亲密，也不能随便过头、不恭不敬，这样，默契和平衡将被打破，友好关系将不复存在。每个人都希望拥有自己的一片私密空间，朋友之间过于随便，就容易侵入这片禁区，从而引起冲突，造成隔阂。待友不敬，有时或许只是一件小事，却可能已埋下了破坏性的种子。维持朋友亲密关系的最好办法是往来有节，互不干涉。
Is Tom at school today?No, He ’s at home ______ he has a bad cold.
Great as Newton was, many of his ideas ____ today and are being modified by the work of scientists of our time.
