1) She was doing her homework ........ I came into her room. a) When b) While 2) I prepared my bag ........ the baby was sleeping. a) When b) While 3) ........ I was making the tea, John asked me for a coffee. a) When b) While 4) I was watching TV ........ the electricity went off. a) When b) While 5) They were playing tennis ........ her mother was watching them. a) When b) While 6) She saw the dog ........ she opened the door. a) When b) While 7) My brother was listening to music with headphones ………. the bell rang. a) When b) While 8) ........ he was making dinner, he couldn’t open the jar. a) When b) While 9) ........ they were doing their homework, Sarah spill the coffee on the papers. a) When b) While 10) I was on a plane ........ you called me. a) When b) While

When or While ?

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