用 be used of 造句 写出4句关于发明的英语句子.
问题描述：
用 be used of 造句 写出4句关于发明的英语句子.
答
每一个句子都要有be used of?如果是.造句：The electric light is created by Edison and used of getting rid of the dark.The printer ,which is used of printing and coping,is a great invention.The film,whic...