Please help me with the following non-cryptic clues.
16d. Condition in an individual commonly characterised by disorientation, anxiety and isolation (6) A?O?I?
31a: A prank or trick (6) ?R???C
56a: Be in complete agreement with, in a way? (3,3,2,3) S?? ??? ?o ??E Is it SEE EYE TO EYE or SEE ONE TO ONE?
48d. It fits to - ----: it fits perfectly (1,3) A T??