By the time I saw the angry expression on his face, I ______ exactly what I was having to face. But not for a moment ______ I should quit.
_____ 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.
Sister Lotus came back home yesterday, ________, she was gone for years.
Han Han's novel was eventually ______as a work of genius.