—Mr. Wang’s never been to Canada, has he?— . He went there on business last week.
I _______ the book for two weeks. I must return it to the school library.
Miss Yang used _____ a farmer. Now she’s a worker.
_______ is it from your home to school? It’s about 10 minutes’ walk.
I t’s quite common in Britain to say “Thank you” to the drivers people get off the bus.
—A new study proves(证明) a walk every day is enough to keep people away from fat.