D. to
Feedback For this sentence we need to choose a preposition after the adjective ‘unfriendly’ that means ‘showing dislike and no sympathy’. We can use three prepositions after the adjective ‘unfriendly’: (1) ‘to’ (The Jacobs have always been very unfriendly to us.), (2) ‘towards’ (Why is she suddenly so unfriendly towards you, Charlie?) and (3) ‘with’ (Why are you so unfriendly with Polina?). Therefore, among the test variants we choose ANSWER 4 (to).