题目内容：

补全对话

从方框中选出适当的句子，完成对话，有两项为多余选项。

 

A：Hello, Peter! 1.      

B：Certainly! 2.      

A：Which of these do you think is the most useful invention, a computer, a telephone or a

television?

B：3.      

A：Why is that?

B：Oh, I think it can help us work and play.

A：4.      

B：5.       , maybe it was invented in 1946.