My boss has a bad bit of rheumatism and needs to sleep indoors from time to time.

They may not even sleep indoors, or want to.

They agreed not to eat or sleep indoors at any point of the journey.

If we're lucky, we'll sleep indoors tonight, but we can't count on doing that very often.

The giraffes, who sleep indoors even in the summer, appear amenable to moving themselves inside.

Like the giraffes, the big cats sleep indoors throughout the year.

Never once did we sleep indoors or seek either town or restaurant.

Only the sick and elderly are allowed to sleep indoors.

He wanted to order all of his family out of the little house so that his guests could sleep indoors.

It would be strange to sleep indoors again.