I don't know who inwented_____cell phone,but Ithink it's

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/17 01:24:37

I don't know who inwented_______cell phone,but Ithink it's_______most useful invention.
A.the;the
B.the;a
C.a;the
D.a;a
为什么选择B?

1：cell phone 特指的是手机这一种东西,是一个独一无二的东西
I have a cell phone .
这里是泛指一部手机
2：a most useful invention 是说是一个有用的发明,不是最高级
有范围的时候才用到最高级
She is the tallest girl in my class

I don't know who inwented_______cell phone,but Ithink it's__ Who's__?I don't know. I don`t know who invented the telescope,but I think it is a i don't know who invent the telephone,but it's really___most thanks,but i don't know who you are? 找首歌but i don t know who you are ,I don't think who I am,but I don't know you what things? but i don't know i just feel that i lose someone but i don't know who is he 这 Maybe I don`t what did you mean,but I know who I`m waiting. i don't know it i don't know who are you and what you believe,but i think yo