[ Grammar ]
choose the correct time tense for this sentence:
I was working on a summer camp when it happened.
A. simple present
B. present continuous
C. simple past
D. past continuous

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Cardiology ServicesGRAMMAR - Could / Could notSimple Compound and Complex SentencesPast, Present, FutureVerbal PhrasesCoordinating ConjunctionsCoordinating Conjunctions and Comparative AdjectivesModals and Past ModalsWill and Going toHave to/Has toOther quiz:
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My uncle ……… pilgrimage to Mecca 5 years ago.
A. go
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