Đề bài: hoàn thành đoạn văn sau bằng cách chia động từ ở chỗ trống
Until a few year ago,no one 1............(hear) of Harry Potter,the young wizard and hero of the children's book Harry Potter and the Philosopher's Stone.The write ,J K Rowling, 2.........(already/write) several stories and books, but this was the first book that was published.She 3........(get) the idea for the story of a wizard at magic school while she 4........(travel) on a rain to London.By the time the train 5...........(reach)King's Cross station,she 6...........(invent) most of the characters.When the book was published in1997 ,no one 7.........(imagine) it would be such a tremendous success,but it quickly 8.............(become) a bestseller.While millions of young readers in many countries 9..........(enjoy) her first Harr Potter book, J K Rowling 10.......(think) of ideas for the next book in this incredibly popular series.