"opened fire" is the past tense.
it´s not a verb so there is no past tense.
The past tense is battled.
The past tense is marauded.
The past tense of campaign is campaigned.
The past tense of fortify is fortified.
Opened is the past tense of open.
The past tense for open is opened.
The past tense and past participle of open is opened.
The past perfect tense of open is 'had opened'.
The present perfect tense of open is:I/You/We/They have opened.He/She/It has opened.
Opened is the answer.
No... that is called a weak verb.
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.
the past tense of am is was and the past tense of has is had
The past tense of get is got. For isn't a verb and so doesn't have a past tense. The past tense of has is had. Had is already the past tense. The past tense of have is had.
Was and were are both the past tense of be. The present tense is: I am he is you are they are The past tense is: I was he was you were they were