Present Perfect VS Present Perfect Continuous

A: I'm very tired. We                   [have walked, have been walking] too fast.

B: Maybe you are right, we                   [have walked, have been walking] 10 kilometres in only one hour and a half.

A: You                    [have drunk, have been drinking]. You can't take the car.

B: But I                         [have only drunk, have only been drinking] a couple of beers!

A: That isn't true; you                    [have drunk, have been drinking] four beers.

I                   [have waited, have been waiting] for you all morning! Where                     [have you been, have you been being] all this time?

I                    [have taught, have been teaching] in this school for 20 years, and I                   [have met, have been meeting] thousands of students from hundreds of different countries.

A: It smells fantastic!

B: Yeah, I                   [have made, have been making] cookies all afternoon.

A: Let me see. Wow! You                  [have made, have been making] a lot of cookies!