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why do you think shakespeare chooses to start ACT IV with the witches gathered around their cauldron

Respuesta :

WorldlyGlass49
Because it is a sort of a foreshadowing of what is about to happen later. Also, he does that to create suspense, tension, and to keep us wondering what is going to happen next.
Peeper6

To keep us wondering what will happen next and also build suspense and to keep a mysterious aura around the witches appearance.