(I have a bill to pay) into passive 1) I have a bill to be paid
2)A bill has to ba paid by me.
Which one is correct (1)or (2)​

1 because in question 2 be is spelled wrong and you are specking to pay the bill not in that same day but in another or in a month or so.

The correct answer in this question  is option c. people in mountainous areas tend to be more isolated from other populations. this is the reason why their local languages do not spread. farming is their  one way of living among the highlanders.