He likes low-carbon life. He lives in the house ________ he built himself out of trash.

My father always gets up early. That’s ________ habit. 

This wallet is too expensive. Can I see        one?

— I  have  no  idea                   to tell her  the  bad  news. — I think tomorrow is the best time.

– Which of these two English books will you borrow? – I’ll borrow     of them. Because they are very interesting.