题目内容
句型转换：完成B句使其与A句意义相同或相近。
A：When he was ten, he had learned maths by himself．
B：________ ________ ________ ________ ten, he had ________ ________ maths．
答案：At,the,age,of,taught,himself
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题目内容
句型转换：完成B句使其与A句意义相同或相近。
A：When he was ten, he had learned maths by himself．
B：________ ________ ________ ________ ten, he had ________ ________ maths．