Jim asked Ling Feng his pet dog while he was away.
A. not to forget to look after
B. not to forget looking after
C. don’t forget to look after
D. don’t forget looking after
网友回答
(答案→)A. not to forget to look after
B. not to forget looking after
C. don’t forget to look after
D. don’t forget looking after
解析：动词不定式的否定式一般是在不定式符号to前面加否定词not，故选A。