[ Subject-Verb Agreement ]
The United States _____ bordered by Canada and Mexico.
A. Is
B. Are

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Grammar - direct/indirect objectsPassive Voice Present SimplePassive Voice - Present TensesSuperlative AdjectivesGerund - to Infinitive Figure of SpeechModals for ObligationPerfect Tenses and VocabularyPresent Simple with Adverbs of FrequencyGrammar : Structural Common ErrorsOther quiz:
Modal Verbs › ViewI __________ finish this report before I go on vacation; it’s my personal goal.
A. must
B. have to
C. ought to
D. can
Grammar › View
. I don’t want _____ coffee, thanks.
A. some
B. many
C. any