—He asked her the bag because it was too expensive．
A. not to buy
B. to buy not
C. not buying
D. not buy
网友回答
(答案→)A. not to buy
B. to buy not
C. not buying
D. not buy
解析：考查非谓语动词的用法。固定结构ask …to do sth“请求…做某事”、 ask …not to do sth“请求…不要做某事”，此处使用不定式的否定结构，直接在不定式前加not。