used
Would is the past tense for will
'Who' is a pronoun, it doesn't have a past tense. But you can use the word "was" as in "who was on the phone?".
No. The word "are" is present or future tense. The past tense would be "were".
To is not a verb and does not have a past tense.
The word game is not past tense. If you use "game" as a verb, the past tense would be "gamed."
is - is present tense. He is from China. was - is past tense. He was sick last week.
The past tense of 'lase' (as in: to use a laser) should be 'lased'.
The word "ashamed" is the same in any tense, but you can use the being verb associated with ashamed to change the tense. For the past tense you would simply use being verbs with the past tense connotation, such as "were" or "have been" or "was", then it would become the past tense "were ashamed" and "was ashamed".
Used
You can use should in past tense to say;Should haveShould not have (shouldn't)
Panicked You can use the word in a different way too. e.g. I began to panic as the boulder moved my way, I had nowhere to go and was afraid I would get crushed.
They have the past tense listed as texted.