Where should the hyphen be placed?
Eager for the game to start again, he watched the half time clock.
Eager for the game to start again, he-watched the half time clock.
Eager for the-game to start again, he watched the half time clock.
Eager for the game to start-again, he watched the half time clock.
Eager for the game to start again, he watched the half-time clock.
Eager for the game to start again, he watched the halftime clock.
The correct placement of the hyphen is:
Eager for the game to start again, he watched the half-time clock.