[ Modal Verbs ]
The investigated was ongoing, but my guess was that it … one of the staff who had stolen the money.
A. must be
B. must have been
C. could be
D. could have been

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Prepositions Of PlaceGerund and InfinitiveComparison of Adjectives and AdverbsTOEIC Grammar and Vocabulary ReviewAdjective Clause and Adverb ClausePassive Voice of TensesGrammar - either...or, neither...norWill, Be going to, Present ContinuousDirect Object and Indirect ObjectPast Narrative TensesOther quiz:
Present Perfect Continuous Tense › ViewI_____ Louisiana state University.
A. am attending
B. attend
C. was attending
D. attended
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By the time the fire was under control, it _____ for nine hours.
A. had been burning
B. has been burning
C. burned
D. will have burned
Relative Clauses › ViewIt is a car ______ I bought last year.
A. whom
B. who
C. which
D. whose
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Correct simple past tense.
A. She called her friend
B. She sent an email
C. She checked a website
