some people think physics is very useful in the r world

some people think physics is very useful in the r world what do you think is the most useful invention in the world People think the dog is the most useful animal in the w(). S Now people in China think English is----useful than before. computer is one of the most useful( )in the world People think the dog is the most u_____ animal in the world. I think i'm the poorest people in the world,everyone is work 英语翻译In some areas of the world the weather is very changeabl 完形填空练习In some areas of the world the weather is very changea 翻译句子some people think staying outdoors is very interesting English is very useful l ,I think there is some useful information in the book分析句子成分