问题补充：
— Jack has got a bad cold.
— Yeah. I told him not to take off his coat, but it was stubborn of himmy advice.
A. don’t take
B. didn’t take
C. not to take
D. not take
答案：
A. don’t take
B. didn’t take
(答案→)C. not to take
D. not take
解析：句意：我告诉他不要脱下大衣但是他顽固的没有听取我的意见。It is +形容词+of/for sb to do sth,it代替动词不定式做形式主语。如果形容词指的人物的性格特征用of,如果指的是动词不定式的内容，用for. 动词不定式的否定形式就是在动词不定式符号to前加not,故选C。
