Marcia Michelle Brown.
yes Marcia Michelle Brown did open the Fire Door in the past.
No you did not know it was Marcia Michelle Brown that did open the Fire Door in the past.
you use the hm cut on the door to open it
You don't know it was Marcia that opened the Fire Door in the past.
no.
"opened fire" is the past tense.
When there's a fire.
The past tense of "hold" is "held," and the past participle is also "held." For example: He held the door open. The door was held open by him.
no.
no.
no.
yes you open the door slowly cause if you open it fast the fire will increase and you might be in serice danger