I notice Linda is often absent from school because of illness. she is not so healthy as she used to be?
A. Why is it that
B. Is it why that
C. Why is
D. Is it why
网友回答
(答案→)A. Why is it that
B. Is it why that
C. Why is
D. Is it why
解析：句意:我注意到琳达经常因为生病而旷课，为什么她不如以前健康了呢？这里是强调句型，其结构是：It is/was+被强调部分+that/who（人）+其他。判断强调句型的方法是把It was that这三个词去掉，整个句子不缺成分，意思完整。这里被强调的是疑问词why，因为有特殊疑问词的强调句型结构为：疑问词+be it+that +其他。故选A。