In 1981 children in the United States spent an average of slightly less than two and a half hours a week doing household chores; by 1997 they had spent nearly six hours a week.

• Achores; by 1997 they had spent nearly six hours a week  
• Bchores; by 1997 that figure had grown to nearly six hours a week  
• Cchores, whereas nearly six hours a week were spent in 1997  
• Dchores, compared with a figure of nearly six hours a week in 1997  
• Echores, that figure growing to nearly six hours a week in 1997