He is helping his grandmother cross the street. His grandmother is 90 years old.(两句合并为一句) He is helping his grandmother the street. 题目和参考答案——青夏教育精英家教网——

题目内容

3. He is helping his grandmother cross the street. His grandmother is 90 years old.(两句合并为一句)

He is helping his grandmother the street.

3. 90-year-old; cross

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