Present perfect vs present perfect continuous

Helen …........................ (wash) the dishes for fifteen minutes.

• have been washing

• has been washing

• is washing

• has be washing

Sam …..................... (drive) a car for five hours now.

• has bee driving

• have been driven

• has been driving

• is driving

I ….................... (look) for information on the subject since last Friday.

• am looking

• has been looking

• have looked

• have been looking

You …........................ (work) as a computer programmer for more than fifteen years.

• has been working

• have are working

• have been worked

• have been working

Andy and Den ….......................... (discuss) the plans for their winter holidays for two hours now.

• have discussing

• has been discussing

• have been discussed

• have been discussing

____________________ (see) her yet?

• Have you saw

• Has you saw

• Have you seen

• Has you seen

I __________ (be) a member of the gym for five years.

• have been being

• has been being

• has been

• have been

I _______________ (know) my best friend since my childhood.

• have known

• have been knowing

• known

• has known

How long _______ you _____ (work) on this position? (you are still working on it now)

• are...working

• have ...been working

• has ... working

• were... working

You look tired! - I _______ (wait) the report all day.

• was writing

• have written

• have been writing

• has been writing