He demanded that Tom should concentrate his attention on learning and depend on himself to acquire rich knowledge.

他要求汤姆应该集中精力学习，并依靠自己来获得丰富的知识。

youdao

He demanded that Tom should concentrate his attention on learning and depend on himself to acquire rich knowledge.

他要求汤姆应该集中精力学习，并依靠自己来获得丰富的知识。

youdao