The past tense would be Frank was your sponsor.
Frank was your sponsor
The local grocery store is a sponsor of our school.
The past tense of "frank" is "franked."
"Has" is the present tense form of the verb "have." The past tense form of "has" is "had."
The past tense form of "destroy" is "destroyed."
struck is the past tense verbStruck IS the past tense form...of the word strike.
Formed is the past tense of form.
The past tense form of "lay" is "laid."
The past tense form of "hold" is "held."
frank
Is and are are present tense form of be. The past tense of be is was/were.
"DO" can be present tense (third person singular form is "does") as well as past tense (past simple form is "did").