Acknowledge is a regular verb so add -ed to make the past -- acknowledged.
In this case you only have to add -d as the word ends in -e
The past tense of steal is stole, and the past tense of meet is met.
Haunted is the past tense of haunt.
The past tense is buried.
The past tense of bury is buried.
the past tense of dig is doug
The phrase "lkimasu" is a verb meaning to go. Should you be looking to use this phrase in past tense and needing to acknowledge that someone has gone, "Ikimashita" is the correct past tense phrase.
the past tense of am is was and the past tense of has is had
The past tense of "has" is "had" and 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
"will be" is the future tense of "be". The past tense of "be" is "was/were".
The past tense is she did.
The word "were" is past tense. It is the past tense of the verb "to be."
The past tense of "will" is "would". The past tense of "to be" is "was" or "were".
The past tense of "you will not" is "you would not."
The past tense is had.
The past tense of "am" is "was" and the past perfect tense of "has" is "had."
HAD is the Past Tense of TO HAVE.