Present Perfect, Present Perfect Continuous

He __________________________(read) this book for 3 hours.

Barbara _____________________(know) Alex for two years.

How long______________________(you/sleep)?

Audrey ____________________(learn) to play the guitar since she was a child.

They____________________(see) this film several times.

Kevin _____________________(look) for a job since he finished school but he is still unemployed.

The ceiling was white. Now it is red. She _________________(paint) the ceiling.

Lisa is still writing letters. She ______________________(write) letters all day.

How many books_________________________(he/write) ?

How long ___________________(you/teach)?