Present Perfect or Present Perfect Continuous

I’ve worked in the garden all day and now I’m tired.

I’ve been working in the garden all day and now I’m tired.

What have you done? You’re all wet.

What have you been doing? You’re all wet.

I’ve finished my homework. Now I’m going to watch TV.

I’ve been finishing my homework. Now I’m going to watch TV.

What have you done with my keys? - I haven’t seen your keys.

What have you been doing with my keys? - I haven’t seen your keys.

She’s worked in the garden all morning and she’s still not finished.

She’s been working in the garden all morning and she’s still not finished.

Why are you sweating? - I’ve cut the grass.

Why are you sweating? - I’ve been cutting the grass.

How many biscuits have you eaten?

How many biscuits have you been eating?

How long have you known her?

How long have you been knowing her?

I’ve had this computer for over 10 years.

I’ve been having this computer for over 10 years.

I’ve had piano lessons for over 10 years and I’m still not very good.

I’ve been having piano lessons for over 10 years and I’m still not very good.

How long has he seen her? - Not long, but they’re getting married next month.

How long has he been seeing her? - Not long, but they’re getting married next month.

I have cooked for the last two hours and now you tell me you’re not hungry!

I have been cooking for the last two hours and now you tell me you’re not hungry!