Burns are called first，second or third degree burns，       which layers of the skin are burned.

All my pockets have been ________ but I can’t find my keys.

 Paper making began in China and from there it _____ to North Africa and Europe.

 The level of the river ___ 20 centimeters over the security line and ____must be taken to control the flood. 

He came all the way to China for knowing its culture and history ________ for making money.