1.  Although investigators believed they had promising leads on the wreckage location as early as Monday, the recovery efforts moved relatively slowly until late Tuesday night.

2.  Anyway, a promising early lead disappears, then a too-little, too-late comeback abruptly aborts in the final seconds.

3.  As time passed and promising leads faded, police officials began investigating the case as a homicide.

4.  A promising lead turned false.

5.  But after an initial promising lead failed to pan out, authorities admit they are no closer to solving the case than they were four years ago.

6.  But as time goes by, and as each promising lead turns out to be a dead end, it gets harder to hope.

7.  But when I searched for restaurant suppliers online I found promising leads like acemart.com and gandgequipment.com, which listed real plates for sale at near-rental prices.

8.  By early fall, she had a promising lead.

9.  He relies on discussions with company executives to gain nuggets of information useful in deciding whether to buy or sell a stock, or scope out promising undiscovered leads.

10.  If these letters offer promising leads we share them with the newsroom editors for possible follow-up by reporters.