[ Modal Auxiliary Verbs ]
He ______ (should / must) apologize for his rude behavior.
A. should
B. must
Select your answer:

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used to vs be used to vs get used toPast or Present Verb TenseGrammar & ReadingSimple Present VS Present ContinuousVerb Tenses and ModalsGerund and InfinitiveSimple Present TensesConjunctive AdverbsTenses and Sentence CompletionPerfect Tenses of VerbsOther quiz:
Simple Present › ViewI ………………… at home. (not sit)
A. doesn’t sit
B. don’t sit
Grammar › View
I __________ a funny video online yesterday.
A. see
B. seed
C. saw
D. seeing
