Octopus is a noun and so doesn't have a past tense.
Only verbs have a past tense.
The past tense is petted.
The past tense is howled.
The past tense of roar is roared.
Roamed is the past tense of roam.
The past tense of scamper is scampered.
The past tense form of the word 'ring' is 'rang'. "The teacher rang the bell."The past tense of "ring" can also be "ringed" since the verb "ring" can be used to mean "to form or provide a circle" or "to surround"."The police ringed the building.""The blue-ringed octopus has a poisonous bite."
the past tense of am is was and the past tense of has is had
The past tense of "has" is "had" and the past tense of "have" is "had."
Was and were are both the past tense of be. The present tense is: I am he is you are they are The past tense is: I was he was you were they were
"will be" is the future tense of "be". The past tense of "be" is "was/were".
The past tense is she did.
The word "were" is past tense. It is the past tense of the verb "to be."
The past tense of "will" is "would". The past tense of "to be" is "was" or "were".
The past tense of "you will not" is "you would not."
The past tense is had.
The past tense of "am" is "was" and the past perfect tense of "has" is "had."
HAD is the Past Tense of TO HAVE.