Read the following passage and choose the answer that best fits each of the numbered blanks.
WHAT MAKES SOMETHING COLLECTABLE?
1
Why do some (1) ______ objects become valuable and highly priced by collectors, (2) ______ others will always remain worthless reminders of the past? Hilary Kay, an antiques expert, suggests that (3) ______ what will be valuable in the future, one needs to look (4) ______ to the past. She gives the example of one of the most valuable objects ever brought to her (5) ______ an expert opinion. .