[ Passive Voice with Modal Verbs ]
. The rules ______ by all employees.
A. must follow
B. must be following
C. must be followed
D. must have followed
Select your answer:

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Modals and Modal PerfectsConnectives (because, due to, owing to, because of)Present Continuos TenseGrammar - FutureTOEIC GrammarConditional Sentence Type 0-3English ArticleFuture - be going toConstrative ConjunctionPast Perfect or Past Perfect ContinuousOther quiz:
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