---She looks very happy. She ______ have passed the exam.---I guess so. It’s not difficult after all.
He went to Nanjing ___ October, 2008.
Information technology is taught in most schools, ________ we have entered the information society.
My aunt has worked in a clinic ____2008.
My father is leaving ___ Shanghai tomorrow.
___ the morning of June 27, they visited the Great Wall.