He had spent much of the last two years studying at home.

This was the second year she'd spent working and studying at the same time.

Perhaps too much of it was spent studying the past.

Typically, she said, a child will call a friend to find out how much time has been spent studying for a test.

But some students were disappointed at not having a chance to make good on the long hours they had spent studying.

Do you have any idea how many hours I spent studying statistics in school?

Don't you remember how much time my master spent studying it?

The other twenty hours they spent waiting and studying the data sent them.

Part of the day was spent studying a machine for making drinking water.

I should have thought your time would be better spent studying the common people.