The past tense of 'ravel' is 'ravelled' in British English. In American English I would guess that it is 'raveled' (by analogy with 'traveled').
The past tense of 'is' is 'was'.
The word "were" is past tense. It is the past tense of the verb "to be."
The word "had" is a past tense verb.
Ate is the past tense of the word eat. Its a past tense word
"received" is the past tense. The present tense of that word is "receive"
What is the past tense word for think
The word "recognized" is in the past tense.
The past tense of the word forget is the word "forgot".
The past tense of the word "accept" is "accepted."
The past tense of the word cry is cried.
The past tense of the word "comprise" is "comprised."
slid is the past tense