1) I was studying for a test _____ Alan arrived. a) when b) while 2) ____ she was walking in the park, she saw Lucy. a) when b) while 3) Dad was sleeping on the sofa ____ Mum came home. a) when b) while 4) It started to rain ____ we were waiting for the bus. a) when b) while 5) _____ we arrived at the party, people were dancing. a) When b) While 6) ____ we were talking, the waiter brought our meal. a) When b) While 7) Lucy was using her phone in class ____ the teacher asked her a question. a) when b) while 8) ____ I was watching a film at the cinema, a thief stole my bike. a) When b) While 9) My friend took a photo of me ____ I wasn’t looking. a) When b) While

When or while?

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