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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:
Grammar › ViewShe hates her job. She wishes she………….. a different one.
A. have
B. has
C. had
D. were
Conditional Sentences › View
It will save us time and money if we … the hotel and flight together.
A. booked
B. had booked
C. book
D. will book
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