【正确答案】 B

【答案解析】[解析] “Jack's mother got up when his father left the house”，意思是“杰克的妈妈在其父亲离家的时候已经起床”。根据短文第一段最后一句话“He said that Jack's mother…would still be in bed at the time he had to leave the house．”“他说杰克的妈妈在他离家的时候还在睡觉”，可以断定此判断为错误的。