He must stay at home to look after his ____ mother . She has been _____for a week.A, ill ...

He must stay at home to look after his ____ mother . She has been _____for a week.A, ill ...

B

试题分析：sick病态的，恶心的；ill生病的，邪恶的；illness病，疾病。句意：他必须呆在家照顾她生病的母亲。她已经生病一周了。结合语境可知前文描述的是他母亲的状态，ill当做生病讲时，只能用作表语，用作定语，意思是邪恶的。Illness是名词，结合语境可知前文用sick用作定语，下文ill用作表语，选B。 点评：该题型是属于英语考试的基础题型，是必考内容。英语单词同汉语一样具有一词多义，一词多性的特点。解答此类问题首先要理解每个选项的基本含义，并注意交叉含义间的区别，了解其特殊用法，然后结合语境选择正确答案。