The illness of her son is so that she cannot go to sleep at night.
A. satisfying
B. worrying
C. surprising
D. puzzling
网友回答
A. satisfying
(答案→)B. worrying
C. surprising
D. puzzling
解析：考查形容词辨析。句意“他儿子的病如此令人担心，以至于她不能入睡。”satisfying “令人满足的”；worrying“令人担忧的”；surprising“令人吃惊的”；puzzling“令人困惑的”。根据句意可知，选B。