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If you go to ___ post office, could you bring me ___ envelope?
A. a / the
B. the / an
C. the / the

Random Topics:
Adjectives and comparisonsLinking Verbs and TensesHabitual and Continuous TensesPreposition FormPast Tense and Past ContinuousIrregular AdjectivesTenseSpeech TensesPassive Voice - Present TensesPersonificationOther quiz:
Wish Clause › ViewMr.Reed wishes his wife __________ her yellow dress to the wedding ceremony next Tuesday. He really likes it
A. wore
B. would wear
C. will wear
D. had worn
Past Simple Tense › View
Where ____________ your last holiday?
A. did you spend
B. did spend
C. do you spend
D. you spent
Comparatives › ViewI/ play/ tennis/ badly/ Tom.
A. I play tennis more badly than Tom
B. I play tennis badlier than Tom
C. I play tennis worse than Tom
D. I play tennis badder than Tom
Conjunctions › View
I have a cold. ____ I should stay at home.
A. Therefore
B. and therefore
C. Therefore,
D. and therefore,
