11.   Martha took hours Deciding which dress to wear.

12.   On a day of heavy traffic it could take an hour.

13.   Some French dishes take hours to prepare.

14.   The concrete will take several hours to set, so make sure no one walks on it.

15.   This is a slow process normally taking an hour per unit of alcohol.

16.   This type of calculation would take several hours without a computer.

17.   We got on the stopping train by mistake and it took hours to get home.

18.   It took an hour to load the van.

19.   Getting there would take hours.