With the world economy growing weaker, for many young people, the dream of landing a good job is becoming harder and harder ________.
Yuan Longping graduated _____ the Southwest Agricultural University. [ ]
This book is not_______for a six-year-old child to read.
Martin was once ________ “problem student”, but now he’s one of ________ top students.
His book is wonderful. I ______ it for three times.