这几天我妹妹呆在家里准备数学考试。的翻译：These days my sister stayed at home preparing for the math exam. 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

These days my sister stayed at home to prepare math tests.

These days my sister stayed at home preparing for the math exam.

These days my younger sister dull at home prepare mathematics test.

These past few days my sister math test preparation for stay at home.

These days my sister stayed at home preparing for the math exam.