Nearly four hundred supermarkets in Beijing are preparing to dim(使暗淡) their lights ________ the "Earth Hour 2010" on Saturday night.
The reporter has ever had a case ______ he got the wrong end of the stick.
Reporters are _______ to get all facts straight and present their stories fairly.
John ______ in his room when he heard screaming.
Not only ______ in photography, but _____ an amateur courses to update my skills.
_____ is no doubt _____ John’s knowledge of first aid saved Ms Slade’s life.