Tell her you have been spending too much of your time looking out windows.
That such people have spent so much of their time thinking about who?
Why do I spend so much of my time escaping from things?
Maybe I have spent too much of my time in distant lands.
The office where she'd spent so much of her time was completely sanitized.
I think you spend too much of your free time reading those mystery stories.
Serious competitors spend much of their free time "taking questions," as they say.
"It must be strange," said the Master, "to spend so much of your time in the present."
Do what you love since you'll be spending so much of your time doing it.
First, you're spending too much of your time on the game plan for the opponent.