第1个回答 2020-10-13
She is my younger sister.She is three years old.She is a student.
时态是一般现在时，每句首字母要大写。
时态是一般现在时，每句首字母要大写。
第2个回答 2020-10-13
She is my younger sister, who is 3 years old this year, and now is a student.
第3个回答 2020-10-13
She is my sister. She is three years old and a student.
望采纳~
望采纳~
第4个回答 2020-10-12
she's my sister,she was three years old,she is a student
第5个回答 2020-10-13
This is my little sister,she is a student and three years old
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