Pictured Puzzles and Word Play / A Companion to the Twentieth Century Standard Puzzle Book - A. Cyril Pearson

How can our sailors fare the best
When times are harder?
How do they greet with merry jest
An empty larder?

I lose my head when I am here,
Transpose me I am three;
Look in a book, you find me there,
And with me her and he.

Jack did ....... that he could square
The circle to a .......;
His friends ....... that a brain so rare
Required attention ........

The missing words are spelt with the same seven letters.