Topics: Past Continuous Tense
Susan ______(play) the piano when someone knocked on the door.
A. was playing
B. is playing
C. play
D. played
Select your answer:

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Article & PrepositionClausePreposition and Word Form1st & 2nd ConditionalsGrammar (either..or.. and neither..nor..)Perfect Tenses and VocabularyHelping and Linking VerbsTypes of Sentence StructureAdjectives and PrepositionsSimple Present and Present Continuous TenseOther quiz:
-ing / Infinitive › ViewI really miss … lots of sweets when I was younger
A. to eat
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Tenses › View
Don’t bother me while I ………………..
A. am working
B. work
C. will have worked
D. will be working
