①We have been learning English for three years.(改为同义句)We have been learning English___ ____ ____ ____.②I started playing tennis when was seven years old.(改为同义句)I started playing tennis ____ ____ ____ ____ seven.

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①We have been learning English for three years.(改为同义句)
We have been learning English___ ____ ____ ____.
②I started playing tennis when was seven years old.(改为同义句)
I started playing tennis ____ ____ ____ ____ seven.

1 since three years ago
2 at the age of

1. since three years ago
2. at the age of
我是英语老师,祝你学习进步!

since three years ago 2 at the ages of

1,、since three years ago
2、at the age of