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She has been waiting for _____ hour.
A. a
B. an
C. the
D. no article

Random Topics:
Simple Present TensePast Perfect TenseGrammar and SyntaxTransitionsVerbs and AdverbsPrepositions and AdverbsLexico and GrammarPassive Voice - Present TensesSubjunctiveVerb Patterns / IngOther quiz:
Modals › ViewI _________ sleep last night.
A. can’t
B. couldn’t
C. won’t be able to
D. shouldn’t
Vocabulary › View
(adj) not clear; uncertain
A. definite
B. doubtful
C. reliable
D. vivid
Relative Pronouns › ViewMy favorite subject, ___ is taught by Mr. Cuadros, is definitely English.
A. Whose
B. Which
C. When
D. Why
Grammar › View
Select the adjective in the sentence.
Juan handled the breakable glasses very carefully.
A. glasses
B. very
C. carefully
D. breakable
