有两个同义句转换怎样改1、I started playing tennis when I was seven years old.I started playing tennis - - - - seven.2、He joined the army 5 years ago.He - - - the army for 5 years.

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有两个同义句转换怎样改1、I started playing tennis when I was seven years old.I started playing tennis - - - - seven.2、He joined the army 5 years ago.He - - - the army for 5 years.

有两个同义句转换怎样改1、I started playing tennis when I was seven years old.I started playing tennis - - - - seven.2、He joined the army 5 years ago.He - - - the army for 5 years.
有两个同义句转换怎样改
1、I started playing tennis when I was seven years old.
I started playing tennis - - - - seven.
2、He joined the army 5 years ago.
He - - - the army for 5 years.

有两个同义句转换怎样改1、I started playing tennis when I was seven years old.I started playing tennis - - - - seven.2、He joined the army 5 years ago.He - - - the army for 5 years.
1.at (the age of)
2.has been in