The UN _____ the documents to save the environment in 2007 and they work well all over the world now.A. drew up B. built up C. gave up
Chinese people have been using paper for over______ years.
Mother came into my study with a cup of milk in one of her hands, and an apple in ______.
______ amazing the Disney film Frozen is!
This is my father. ______ is a farmer in the north of China.
Although I am not good enough at my subjects, I want to be ______ university student in the future.