The present tense of crept is creep.
Crept is a verb. It's the past tense of creep.
Softly is the adverb because its the one that describes the verb which is crept.
NO
Crept is the past participle and past tense of the verb creep. Example: I look out the door and see my cat creep up on a mouse.
Please restate your question to cut out the ambiguity and post again.
I'm not sure which phrase you are asking about. This sentence has quite a few of them. Rattling and sputtering - this is a participle phrase used as an adverb the old car - this is a noun phrase that Martina had - this is a relative clause crept up the hill - this is a verb phrase, consisting of the verb "crept" and the complement "up the hill", which is a prepositional phrase
The past participle of "crept" is "crept." It remains the same in both the past tense and past participle forms.
Crept is a verb. It is past tense of creep.
The future tense of crept is will creep.
the crept in the house is very harmful.
The lion crept up on the unsuspecting prey.
The past tense of "creep" is "crept".
The present tense of crept is creep.
Crept is already the past tense of creep.
The burgular slowly crept up the stairs.
Crept is a verb. It's the past tense of creep.