Responsible means that someone is accountable or in charge. A way to say that in past tense would be that they took charge. They were held accountable. They were liable or accountable.
The past tense of is not is was not. (Not is an adverb and does not change from one tense to another.)
v.Past tense and past participle of keep.
The past tense 'was'
Past tense means that the action happened in the past.
"Found" is the past tense of the verb "to find". Improve: -Founded is past tense of found which means to establish -But also, found is past tense of find which means to look for something and see it found can be present tense (a) or past tense (b)
Lost is in the past tense. Lose is in the present tense.
The past perfect tense.
Feared is the only past tense of fear.
No, "bade" is the past tense of "bid" when it means to command or order.
"had felt" is in the past perfect tense. It is used to show an action that occurred before another action in the past.
Dare has only one past tense--dared.
The simple past tense of crawl is crawled. It means the person walked slowly in the past.