Lu Xun was ___ the greatest writer in the history of Chinese literature.
He is very angry because the bag _____ on the net a month ago hasn't arrived yet.
When the old man recalled the old hard times, he always said, “ It was the first time that I ____ a full meal. I remembered it forever.”
_____ food is hard to find, few birds remain throughout the year.
.UNESO is an international organization ,which _____ United Nations Educational, Scientific and Cultural Organization.
On Jan. 24 , 2012 ,Shen Zhou VIII returned to ____ earth from____ space successfully.