The verb to "do" is used in many different ways in English. Here are the main uses of the verb to do for reference, self-study and in-class use. To do can be used as an auxiliary verb, a verb to speak about action in general, as well as combining with many nouns to express taking care of various tasks.
To do is generally used to express tasks we do, rather than things we make. Here are some of the main set phrases about tasks we do:
do business
do exercise
do homework
Example :
I'll do my homework.