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Read the backpacker's blog post. Select ALL the sentences that correctly describe two ongoing actions happening at the exact same time in the hostel kitchen.
The correct answers are I was cooking dinner while my new friends were playing cards and While I was cooking dinner, my new friends were playing cards.
When describing two longer actions happening at the same time in the past (parallel actions), we use the past continuous for both verbs ("was cooking" and "were playing"). The word "while" can go at the beginning or in the middle of the sentence.