useful invention(发明) the computer i
Wangbei’computer shows the dates on 
The doctor thought  
The government &nbs
Which of these do you think is ____ useful invention? [ 
英语翻译The Wanted - The Way I Fee
The price of the computer is the ___
I was walking down the street
I think the most helpful invention is light bulb. It &
Mike is learning _______ a computer.
......
,
.,.