How did she know I had not done my homework,had been smoking (and in my parochial school uniform,too),or had lied about where I had been and with whom?

• 她是如何知道我没有做家庭作业的?我抽烟(而且是身穿教区校服)她是如何知道的?我骗她我去过哪里、跟谁在一起，她又是怎么知道的?