DNA testing was to be used by police in the search for the missing Dublin schoolboy. His parents have welcomed the news.
Why 'was to be used' is incorrect in this sentence and 'is to be used' is suggested as correct by the 'Advanced Grammar in Use' book?
Which part of this sentence suggests that we have 'The future from now' instead of 'The future seen from the past' scenario?
I thought that 'was to be' is correct as I wasn't sure whether the search took place in the past or will take place in the future.