"What do we eat?"
We are what we eat.

2. INDIRECT QUESTIONS:
A) kysymyssanojen kanssa
WH-WORDS (who; which; where; why; when) (how)
"Where do you live?"
a) I want to know where you live.
b) I wanted to know where you lived.
"Why did you say so?"
a) I wonder why you said so.
b) I wondered why you (had) said so.