The lady, ________ her purse in the street, didn't have any choice but ________ the police for help.A.robbed of; to askB.robbed; askC.robbing; askD.robbing; to ask
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A解析解析：rob sb．of sth．为“抢劫某人的东西”，这里robbed是过去分词作定语；have no choice but to do sth表示“除了做……，别无选择”。