Answers

2014-12-09T16:57:37+05:30
mans best invention are
<fire by using sticks
 
<wheel
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i am little busy
u r talking to me so rudely
no actually i am busy in completing my homework
sorry to disturb u. actually i did not knew that i am disturbing u
its ok dear
2014-12-09T16:57:48+05:30
Man's greatest invention is the wheel because it provided an example of why we should look into physics further.
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