She _______ have left her keys at home; that's why ... | GrammarQuiz.net

Topics: Past Modals

She _______ have left her keys at home; that’s why she couldn’t open the door.

A. must

B. must

C. must have

D. can have

Select your answer:

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Past form of Modals Modals and Comparative Superlative Asking & Giving Opinion Superlatives Articles and Nouns Demonstrative Pronoun Causative Verb Coordinating Conjunctions Pronouns and Antecedents Quantifiers & Modals of Obligation

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A. Is
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A. I

B. me

C. it

D. you

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