China made a commitment to the world in the Copenhagen Summit that by 2020, the carbon-intensity of its economy ______ fall 40% to 45%.
— Why did you put the wood near the fire? It’s dangerous. — Don’t worry. Wet wood won’t _______.
— Thank you for joining in my birthday party. — _______.
-------- Hey, look where you are going ! ------- Oh, I’m terribly sorry. __________.
Robert is said _____ abroad, but I don’t know what country he studied in .
_____ him and then try to copy what he does .