Mr Smith, there’s a man at the front door who says he has news _________ vital importance

you called yesterday evening? —My sister. Why?

Mr Brook didn’t come back at the usual time last night ______, he met some friends and stayed out until midnight

celebration of the university’s 100thbirthday, he said, “I have never experienced __________ time here as a graduateof Tsinghua University.”

Do you know _______ they got to know each other —- It was last year_______ they both taughtChinese in Scotland.