With his attention___(concentrate) other things ,he knocked an old man down while riding to school.为什么用“-ed”形式而不用“-ing”形式?

with his hand是什么意思 one cat with his one speaps with his with his mom 翻译:with his quilt on his back his conversation with his teacherd的意思 Off with his head ------ReadOff with his head ------Read Queen. He travelled with his friend.就with his friend提问 A bad workman quarrels with his workman quarrels with his with a smile on his help Mike with his maths. off with his head 中文 he enjoys ()with his friends he drowned his feeling with Henry did his homework with his deskmate.就with his desk划线提问. Jaskeon was very angry ( ) his brother ( ) his words.A.with,with B.to,with C.with,at D.with,to His classmates often help him with his Chinese. in his hand与with his hand区别