[ Grammar ]
A: This is for you.
B: Thank you. Is it ___ red pen?
A: No, it’s ___ orange pen.
A. a ; a
B. an ; a
C. a ; an
D. an ; an

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Conjunctions - ConnectorsCan vs be able toAuxiliary and Modal VerbsAdverb PhrasesCommon ErrorNouns, Pronouns, Antecedents, and Singular and PluralPresent Perfect and Present Perfect ContinuousFamily Vocabulary and GrammarAdverbial Clause of ConcessionConditionals III - Mixed 1st, 2nd & 3rd ConditionalsOther quiz:
Conditional Sentence › ViewIf you can give me one good reason for your acting like this, ________ this incident again.
A. I will never mention
B. I never mention
C. will I never mention
D. I don’t mention
Simple Present vs Present Continuous › View
i____________the dog for a walk every day
A. do not takes
B. does not take
C. do not take
D. i am taking
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A. Declarative
B. Interrogative
C. Imperative
D. Exclamatory
Grammar › View
We still have ____ hour to finish the test.
A. a
B. an
C. the
