Harry broke his arm when he tripped and fell., I made a lot of money while I was working for my uncle., They bought new clothes while they were shopping at Target., We didn't get cold while we were waiting at the bus stop., You didn't buy milk when you were at the grocery store., While I was cooking, I burned my finger., I burned my finger while I was cooking., Chua dropped her wallet while she was getting into the car., Chua was getting into the car when she dropped her wallet.,

while/when and past progressive

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