Find the mistake: Though formal close friends, they have now been estranged from each other due to some regrettable misunderstandings.
have now been estranged
Correct answer: A
Although they were formerly close friends, they became estranged from each other by some unfortunate misunderstanding.
=> Based on the usage of words, we see that A is wrong. Because according to the translation, the original sentence will not match the context and semantics.
Correction: formally => formerly
Note two confusing words:
– Formally (adv): formal
– Formerly(adv): old, formerly