문제 1선택형그는 책상 위에 뒀던 그의 열쇠를 찾을 수 없었다.He couldn't find his key that he had put on the desk.He hadn't found his key that he put on the desk.He couldn't find his key that he put on the desk.
문제 2선택형내가 공항에 도착했을 때, 비행기는 출발했었다.When I arrived at the airport, the plane left.When I arrived at the airport, the plane had left.When I had arrived at the airport, the plane left.
문제 3선택형나는 대학생이 되기 전까지 한국에 살았었다.I had lived in Korea before I became a college student.I lived in Korea before I became a college student.I lived in Korea before I had become a college student.
문제 4선택형그는 수년간 앓다 돌아가셨다He passed away after he has been sick for years.He passed away after he had been sick for years.He had passed away after he had been sick for years.
문제 5선택형나의 아버지는 내가 태어났을 때 일본에 가고 없으셨다My father had gone to Japan when I was born.My father went to Japan when I had been born.My father went to Japan when I was born.
문제 6선택형미안해 너가 내게 빌려준 책을 잃어버렸어.I'm sorry I lost the book you had lent me.I'm sorry I had lost the book you lent me.I'm sorry I lost the book you lent me.
문제 7선택형Tom은 집에 없어. 그는 쇼핑을 갔어. Tom was not at home. He had gone shopping.Tom was not at home. He went shopping.Tom had not been at home. He went shopping.
문제 8선택형그들은 많이 연습하지 않았다. 그래서 그들은 게임에서 졌다.They had not practiced a lot. So they lost the game.They didn't practice a lot. So they had lost the game. They had not practiced a lot. So they had lost the game.
문제 9선택형셀리는 그녀가 이미 끝낸 리포트를 가지고 오는 것을 잊었다Sally forgot to bring the report that she already finished.Sally had forgotten to bring the report that she already finished.Sally forgot to bring the report that she had already finished.
문제 10선택형면접관이 나에게 얼마나 오래 회사를 위해 일했는지 물었다.The interviewer asked me how long I worked for the company.The interviewer asked me how long I had worked for the company.The interviewer had asked me how long I had worked for the company.