Knew.
She knows Jack. She knew him when he was a boy.
The past tense of "knows" is "knew". Example: "She knew the answer to the question."
To say in the past tense, you would use the word "said."
You can use "had to" to express obligation in the past.
The past tense of "be" is "was/were." The present tense of "be" is "am/is/are."
The past tense of 'lase' (as in: to use a laser) should be 'lased'.
"Be" can be used in various tenses, including present tense (am, is, are), past tense (was, were), and future tense (will be).
You use the past tense form which is 'had'.
Is can be used in the past tense if it's in its past tense form, which is was.
"is' is present tense. For past tense use was or were.
The past tense is involved.
I used the past tense to answer this question.
'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?".
Known is the past participle of know know / knows = present tense knew = past tense known = past participle knowing = present participle
No. The word "are" is present or future tense. The past tense would be "were".
Would is the past tense for will
The past tense of "conference" is "conferenced." For example, "We conferenced with our colleagues yesterday to discuss the project."
No, the past tense is always put.
is - is present tense. He is from China. was - is past tense. He was sick last week.