Complete each analogy with the appropriate word. wood is to fire as food is to grinning is to cheerful as teetering is to conniving is to scheming as terrible is to mournful is to sad as gluttonous is to choices: substance, precarious, voracious, abysmal

The complete correct analogies would look like this:

1) Wood is to fire as food is to SUBSISTENCE. (Fire needs wood to keep on burning and stay alive, same as a person needs to eat food to survive).

2) Grinning is to cheerful as teetering is to PRECARIOUS. (A person that is cheerful will naturally display a grin; while precarious means to be unbalanced, which would make someone teeter or sway unsteadily and likely fall).

3) Conniving is to scheming as terrible is to ABYSMAL. (Scheming is a stage of planning of some wrong-doing, which would come before the conniving by taking action on that wrongful plan. Here, the word "abysmal" is being used as a worsening of a terrible thing).

4) Mournful is to sad as gluttonous is to VORACIOUS. (To be mournful is to suffer sadness from a loss, so they're natural companions. The same is the case for "voracious" and "gluttonous", for both mean to have an exaggerated apetite).

Hope this helps!

what are the sentences?