Choose is not past tense, it's present tense. The past tense is chose.
Yes, it's the past tense of choose.
Is can be used in the past tense if it's in its past tense form, which is was.
Ought is already acceptable in past tense. 'Ought to be' is present tense, while 'Ought to have been' or 'Ought to have' is past tense.
The past tense is undid.
The past tense is downed.
Choose is present tense. Chose is past tense.
"Chose" is the past tense of choose.
The past tense of choose is chose.
The past tense of to choose is chose. The past participle is "chosen."
The past tense for "choose" is "chose."
The past tense of "choose" is "chose."
Simple past tense - chose. Past participle - chosen. Present tense - I/you/we/they choose. He/she/it chooses. The present participle is choosing. Future tense - Will choose.
The simple past tense is chose. The past participle is chosen.
The past perfect tense of choose is had chosen.
Chose is the past tense of to choose.
The past tense of "choose" would be "chose" or "chosen". Just "chose"; "chosen" is the 3rd form = the Past Participle.
The simple past tense is chose. The past participle is chosen.