Crosswordiee.com

% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for It starts and ends with a line:

COGITO: Start of a line ending in a sum?
RACE: It starts and ends with a line
ETTU: Start of the line that ends "Then fall, Caesar"
ETTU: Start of a Shakespeare line that ends "Then fall, Caesar"
GIRLSNOTASOFTEN: End of the zinger ... and start of the punch line