[ Grammar ]
I am busy reading _____ useful book. I started to read this book ______ hour ago.
A. the,an
B. an,a
C. a,an
D. a,the
Select your answer:

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Mixed TensesPresent and Past Simple TenseParallelism and Subject Verb AgreementPronouns and Subject Verb AgreementConditional SentencePlaces in TownGrammar: Parts and PunctuationPronouns, Verb, ConjunctionVerb FormAdverbial Clause of ConcessionOther quiz:
Grammar › ViewWhich sentence is punctuated correctly?
A. Do not touch the hot stove!
B. Who did not eat their broccoli.
C. December is the last month in a year,
D. Tell me where you last saw the cat hiding?
Mixed Tenses › View
I will come and see you before I _______ for America.
A. leave
B. will leave
C. have left
