. In order to learn the _______ of the family business, Bill took a job as messenger boy in one of the offices.
My classmate Lily is in English because she once stayed in the U.S. for several years.
Gerneally speaking, it is difficult to breathe at a high of Tibet (西藏).
When I was tired of my work, I wouldmy belongings and go on a short trip.
Mary was given a huge pay rise as a for her great efforts in improving sales.
—How will I ____ you at the airport? —Well, I'm wearing a hat and I've got a big black umbrella with me.