【单选题】
、Although he had looked through all the reference material on the subject, he still found it hard to understand this point and her explanation only ____ to his confusion.
【判断题】
答题说明:句子没有语法错误请选择“正确”,有语法错误请选择“错误”If you have been in the department store such long that you feel hungry, you will not need to leave the building.