They __________ (celebrate) their anniversary when they __________ (find out) that their flight __________ (be) canceled.
A. were celebrating/ were finding out/ was being
B. were celebrating/ found out/ had been
C. are celebrating/ findout/ has
D. were celebrating/ were finding out/ was

Random Topics:
Simple Present - WH QuestionsConjunctions and PrepositionModal and Auxiliary VerbsVerb Tenses (Progressive, Perfect)Verbs with Prepositions and ConjunctionsGrammar & VocabularyConditionals and Modals of ProbabilitySimple Past Tense and Present Continuous TenseGrammar PhrasesLinking Words & PhrasesOther quiz:
Modals › ViewWe use needn’t to express _________ .
A. obligations in the past
B. advice
C. things that are not necessary to be done.
D. things that are possible to happen.
Vocabulary › View
A book which has a separate space for each day of the year. You use a diary to write down things you plan to do, or to record what happens in your life day by day.
A. diary
B. notebook
C. textbook
Demonstrative Pronouns and Verb Tenses › View“Where ____ she live?”
A. does
B. is
C. do
D. are
Present Continuous Tense › View
What are you doing tonight ? We …………….. to see a movie .
A. am watch
B. is watching
C. are going
D. are watching
