Answer: An auxiliary verb helps the main (full) verb and is also called a "helping verb." With auxiliary verbs, you can write sentences in different tenses, moods, or voices. Auxiliary verbs are: be, do, have, will, shall, would, should, can, could, may, might, must, ought, etc.
a. sing b. pray c. preach d. give a. sing b. pray c. preach d. give
Explanation: Have a great Thanksgiving! :)