----- Nội dung dịch tự động từ ảnh ----- John wrote his name on his book. Wiggins said he wrote with a black pen. Aaron said it was a brown pencil. Elliot said it was a black crayon. If each of John's friends were half right, what did he really use to write his name? a black pencil a black pen. a brown crayon a brown pen Nhóm TP