I am sorry to have taken up your valuable time.
O jikan o torasete kyōshuku desu.
indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.
to harvest (a crop)
feeling obliged; being grateful; being thankful; being sorry; being ashamed; shrinking back in fear