Luck is on investigators' minds, too. With scant（不足的）leads, （）of previous serial-killer manhunts

Luck is on investigators' minds, too. With scant（不足的）leads, （）of previous serial-killer manhunts（追捕）say police may have to wait to get lucky.

A.veterans

B.suspects

C.dwellers

D.friskers

点击查看答案