His mother asked him watch TV he finished his homework.
A. not to , when
B. to, untill
C. to not. Till
D. not to; until
网友回答
A. not to , when
B. to, untill
C. to not. Till
(答案→)D. not to; until
解析:ask sb (not) to do sth.意思是:叫某人(不)要做某事;not…until…直到….才.