58%
Finish the concerned mother's message about her teenager's weekend habits.
Leo ___________________________ that new dragon video game since breakfast. He ___________________________ in the exact same chair for six hours, and I am starting to wonder if he has forgotten how to blink!
The correct answers are has been playing and has been sitting.
The Present Perfect Continuous highlights the ongoing nature of an action.
We often use it with since to show when the action started (since breakfast) and with for to show the duration of the action (for six hours). Using the simple present ("is playing") would ignore the fact that the action started in the past.