I worked as hard as I could _______ for the final exam.
It suddenlyto the teacher that he hadn’t left any assignments(作业) to his students.
—What a large sculpture! —Oh, itseven metres high.
“Whatfrightening experience!”the woman who survived the earthquake said withfrightened look on her face.
The reason for her failure is_____she was too proud.
There are_____that high school cheating may be on the rise.