题目内容
5.He is helping his grandmother cross the street.His grandmother is 90 years old.(合并为一句)
He is helping his grandmother the street.
5. 90-year-old;cross
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题目内容
5.He is helping his grandmother cross the street.His grandmother is 90 years old.(合并为一句)
He is helping his grandmother the street.
5. 90-year-old;cross