Rewrite the sentences

50. Because of being lost, we stopped to ask a policeman for directions.
We ............................................................................................................................
51. We are worried because we have to live very far from our parents.
We wish ............................................................................................................................
52. He hasn't been to the doctor's for over a year.
He hasn't had ............................................................................................................................
53. That old keyboard is not worth repairing.
It is pointless to .........................................