问题补充：
She is making herself ill with over her sons future.
A. trouble
B. annoyance
C. disgust
D. worry
答案：
A. trouble
B. annoyance
C. disgust
(答案→)D. worry
解析：worry既可作动词用，也可以作名词用，意思是“忧虑”，后接介词about或over。worry over 比worry about对某事的忧虑更为持久，更为专注，如：He worries over the least thing that goes wrong.(他总是惟恐有一点小事出错。)
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