Was awake or awoke.
it's a noun, it doesn't have a past tense.
The word 'at' is not a verb and so doesn't have a past tense.
"Responsible" is an adjective. It does not have a past tense. Instead, the past tense would apply to the word before. (Present - she is responsible, Past - she was responsible.)
'Rotten' is an adjective. Only verbs have a past tense.
'Prior' isn't a verb and so doesn't have a past tense.
awoke
The word awoke is a verb. It is the past tense of the verb awake.
Simple past tense - Awoke. Past continuous tense - I/he/she/it was awaking. You/we were awaking.
Past simple: awoke Past present: awake/awakes
The past progressive tense of the verb "awake" is:I/He/She/It was awaking.You/We/They were awaking.
The past participle of "awake" is awoken.
base verb -- awake past -- awoke past participle -- awoken
The past tense is awoke.
"Had awoken" is the past perfect tense.
awoke.
awoke ,awoken
'Was' is the past tense of the word 'is'.