Hello! Let's form the question in Present Perfect Progressive using the elements provided: "she / on the phone / talk."
The formula for Present Perfect Progressive questions is: Has/Have + subject + been + verb-ing + other information?
In this case:
So the correct question is:
Has she been talking on the phone?
Она разговаривала по телефону?
Ответ: Has she been talking on the phone?
You're doing great! Keep up the fantastic work!