[ Modal, Causative Verb & Elliptical Structure ]
Who … him lock the door yesterday?
A. Have
B. Has
C. Had
D. Got
Select your answer:

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Modals for Advice, Obligation/Prohibition, Necessity and Lack of NecessityTOEFLPast Simple, Present Perfect TenseVocabulary and GrammarWill & Be going toAdjectives and AdverbsPrepositions and AdverbsRelative ClauseAdjectives with PrepositionSubject Verb Agreement and TensesOther quiz:
Verb Tenses › ViewThey __________ for two hours before the rain started.
A. had been walking
B. have walked
C. have been walking
Modals › View
She ___ speak six languages
A. can
B. should
C. must
D. would
