Pictured Puzzles and Word Play / A Companion to the Twentieth Century Standard Puzzle Book

by A. Cyril Pearson

137. MISSING LETTERS

whtmrslndsosdlyswr?
whtdyssdrksdysthtwrslrm?
lssknyskthndfr,
llshllcllwrhrssndhrm.
whycllsblldstlkthtghstlyrt
llgllntctsgrndndmntyprt?

Can you supply the missing letters?

[Solution]