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By ________ time we had just left the office, ________ alarm went off.
A. Ø / the
B. a / an
C. a / the
D. the / an

Random Topics:
Present or Past TensesQuantifierQuantifiers: too many, too much & enoughShould, Should not haveTenses and VoiceModals of Necessity and SuggestionRegular and Irregular VerbsPresent Tenses and ConnectorsPresent Perfect Simple & Present Perfect ContinuousSimple Compound and Complex SentencesOther quiz:
Adverbial Clause, Noun Clause › ViewTall __________ she is, she can’t reach the shelf.
A. as
B. even though
C. however
D. but
Vocabulary › View
What is a ‘chalice’?
A. to give in or agree to something
B. a drinking cup or goblet
C. watchful or cautious
D. a lace of confinement such as a jail
Grammar › View. He______ finished cooking when we arrived
A. have
B. had
C. has
Present Continous Tense › View
… is going to the post office
A. Tiara
B. They
C. We
