[ Grammar ]
I ___________________________ when I heard a loud knock on the door.
A. is sleeping
B. am sleeping
C. was sleeping
D. were sleeping
Select your answer:

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Modal Verbs and ConditionalsConjunctions - Conjunctive AdverbsWord Form & Verb TenseVerb to Be Tenses & Object PronounConditional 0Modals, Phrasal Verbs, Gerunds and InfinitivesDo / Have / Can - Basic QuestionsPassive Voice with Modal VerbsConditional Sentence Type 1Grammar - FutureOther quiz:
Some vs. Any › ViewI’m hungry. I want ____ to eat.
· a.anything
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Past simple vs Present perfect › View
When I was younger, I ________ (use) to eat pizza almost every day.
A. used
B. use
C. would use
D. was used
