[ Perfect Tenses ]
The boy knocked the door. There was nobody inside. His mother ____________ yet.
A. has not returned
B. have not returned
C. had not returned
D. did not return

Random Topics:
Vocabulary & Phrasal VerbSimple Present VS Present ContinuousReported Speech and Reporting VerbsUse of Prepositions or ConjunctionsReflexive Pronouns & Modal VerbsPresent Simple vs Present ContinuousModals of Obligation & ProhibitionPresent Perfect: for/sinceMixed ConditionalLinking Verbs and TensesOther quiz:
Some vs. Any › ViewDo you have ___ brothers and sisters?
… a.a
… b.an
… c.some
… d.any
Tenses › View
While Nora _______ reading a book, her brothers played chess.
A. is
B. are
C. was
D. were
Grammar Comma Usage › View. Which answer gives the best way to correct the sentence: “If you go to 1 East 161st Street, Bronx, New York, you could watch the Yankees play baseball.”
A. Delete the comma after “New York”
B. Add a comma after “East”
C. NO CHANGE
Grammar › View
I’m sure it was Ana I saw in town as I recognised her coat.
MUST
It …………………………………. Ana I saw in town as I recognised her coat.
A. had been
B. must have been
C. must be
