【填空题】If you get on well with the headteacher, and she gets on well with you, yourlife here will be easy. ( __________ )

______ so many students ill, the headteacher has decided to postpone the meeting. A: Because B: Since C: With D: As

—Where's our headteacher? —He's left a ________ saying that he has something important to do. A: news B: message C: excuse D: sentence