1) __ the man was running, he dropped his phone. a) when b) while 2) __ the police arrived, the thief was escaping. a) when b) while 3) __ the thief was stealing the bag, the alarm went off. a) when b) while 4) __ the alarm rang, the thief was hiding behind a car. a) when b) while 5) __ the detective was investigating, the suspect escaped. a) when b) while 6) __ the officer shone his flashlight, he saw footprints. a) when b) while 7) __ the man was climbing the fence, the dog started barking. a) when b) while 8) __ the thief opened the safe, the alarm went off. a) when b) while 9) __ the police were searching the street, the thief was hiding in the alley. a) when b) while 10) __ the witness shouted, the thief ran away. a) when b) while

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