【单选题】Mr. Smith asked Nancy ____ it took her to fly to New York. [ ]
【单选题】—Mr. Jiang, long time no see. How are you? —Fine, thanks. How are you______your teaching?
【单选题】—______will Mr. Green be back ? —In a week, I think .
【简答题】How long is the paid education leave that Mr. Chang plans to have?