1.sleeping：being asleep

 2.playing football:taking part in a game of football.  

 3.studying:learning about a subject, usually at school or university.

 4.readingthe activity or skill of getting information from books, newspapers, etc.

 5.dancing:the activity of moving your feet and your body to the rhythm of music.
 
 6.tidying up:the activity of making a place tidy.

 7.singing:the activity of singing.

 8.doing housework:the activity of cleaning and tidying your house.

 9.riding a bike:the activity of travelling by using a bicycle.

10.hobby:an activity that you enjoy and do regularly when you are not working.