Though the long-distance runner ______ his previous record last month, his trainer let him ______  its speed as he went around the curve.．

Trapped by the police, the terrorists made their ______ attempt to explode the bomb that they carried.

David is      . He is from      .

       to the conference, we have already discussed this problem among ourselves.

—Does Bill do his new job well?　　　　— ________ his old job. I’m afraid there’s no hope for him.