Find mistakes and correct them. 1) I had written my test at 2 o'clock. 2) When our parents had returned home, the film had already finished. 3) Sue gave me the report which she typed in the morning. 4) By the end of last week all the students passed their exams. 5) Why not Sam had called me back by 8 o'clock yesterday? 6) Greg had chosen the present and asked the shop assistant to pack it. 7) How many articles did Betty typed by the end of last month? 8) Amanda cooked supper before her husband returned home. 9) By what time had the passengers leave the plane? 10) Where had you gone after the lessons had finished