1.We could sleep more on the Saturday/Sunday morning .
2.I ususally sleep for half hour / I ususally sleep no longer than one hour.
3.He sleeps for over 8 hours/He sleeps for less than 8 hours.
4.We still have one hour left to deal with this.
5.On Saturday morning,we go shopping or go to the park.
6.We clean the office on every Monday and Thursday.
7.On Friday morning,he always has dinner and plays with his friends.