for 7 weeks, in a week, in an hour, for the last three months, during the war, during the work, before work, after work, up to four hours, by three o'clock, from 1980, in 1945, in August, at 4 o'clock, on Monday, on the first May, in the morning, at noon, at night, at 10 past 8, at 10 to 7