【用戶】【站僕】摩檸Morning
【年級】小一下
【評論內容】原本題目:20. After graduating from the engineering department, he applied his knowledge and skills aircraft design.(A) to (B) on (C) at (D) for修改成為20. After graduating from the engineering department, he applied his knowledge and skills ____aircraft design.(A) to (B) on (C) at (D) for