Okay, let's fill in the blanks with the correct form of the verbs in Present Perfect or Present Perfect Continuous.
Explanation: The action of 'looking through' started in the past and is continuing, hence Present Perfect Continuous.
Explanation: Here, Ben is announcing a recent discovery, so Present Perfect is appropriate.
Explanation: Pam emphasizes the duration of the activity of playing, indicating the action started in the past and has been continuing until now, therefore Present Perfect Continuous is the most suitable tense.
Explanation: Similar to #3, the duration and continuous aspect suggest Present Perfect Continuous.
Explanation: This expresses an experience up to the present moment, so Present Perfect is used.
Explanation: Pam is asking if Ben is aware of the time right now, hence present perfect
Explanation: The action of the boss calling happened very recently, hence present perfect
Explanation: 'Waiting' began in the past and continued all morning, so Present Perfect Continuous is fitting.