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Must have.

Must isn't a verb, so it doesn't have a past tense.

But you can say must have, like "You must have done that!"

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13y ago

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Related Questions

Past tense of must?

"Must" doesn't have a past form. You can use "had to" to talk about obligation in the past.


How do regular verbs and irregular verbs form their past tense?

-ed is added to the end of regular verbs to form the past tense. For example, the past tense of 'dance' is 'danced'. Irregular verbs do not follow a pattern to form their past tense form. You must simply learn the past tense of these verbs. For example, the past tense of 'see' is 'saw'.


How will form the past and past particles?

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How do you form the past tense and past participle of a verb?

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How do you make the past tense?

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What tense is must have caught?

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What is the past form of advise?

what is the past form of forgive


Is this sentence grammatically correct- The pranksters were they?

No because the linking verb you use is in the past subjunctive plural form but you must use "was" a past indicative plural form.


What is the present perfect form of the sentence 'he was ill'?

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What is the past tense of must?

You can use "had to" to express obligation in the past.


What is the past tence of must?

The past tense of must is should have