We do our homework at the table. what is principal part?

We do our homework is the principal part because it includes the subject, and verb.

Explanation:

All right in this composed sentence, we can observe something pretty clear. It starts with the subject and it is followed by the verb, then it goes on with a possessive adjective. Followed by an object involved in the action. Therefore we complement it with the location in which we carry on the action. This is a specification of what we are doing here, therefore because we only provide further detail to amplify the reach of knowledge and data of the action it is the second part.

the woman's ability to do hard work is by far the best answer.