He could read and write when he was

He could read and write when he was 5 years old. Thế bạn biết đọc và biết viết khi nào?

Kết quả (Anh) 1:

He could read and write when he was 5 years old. You know how to read and write?

Kết quả (Anh) 2:

He could read and write khi he was 5 years old. So you know how to read and write when?