. The main fact(or)s in human life are five: birth, food, sleep, love and death. (One could increase the number— add breathing for instance— but these five are the most obvious.) Let us ask ourselves ________ our lives.

Li ping’s brother is an boy.

Tom will call me as soon as he ______ home.

It all depends on _____ you can support us.

The girl has big eyes. But father’s eyes are bigger than .