Помогите упр 3 срочно

For seven weeks, during the week, in an hour, during the last three months, during the war, during work, before work, after work, since 2 o'clock, until 4 o'clock, to 3 o'clock, since 1980, in 1945, in august, at 4 o'clock, on Monday, first of May, in the morning, at noon, at night, at 10 minutes past eight, 10 minutes until seven