题目内容：

-------what to do next ,I asked my teacher for advice.
A.Don't know B.Not knowing C.Not to know D.Not know
该选哪个啊.
哭求.

优质解答

B 首先 分析句子结构 what to do next 是从句 I asked my teacher for advice.是句子的主句部分,谓语动词是asked,句子中只可以有一个谓语动词,所以选择的选项不能是动词了 ,淘汰AD,由于主语I 和know之间是主动关系,所以选择ing,动词不定式 表将来.由于what to do next已经用不定式表示将来 所以避免重复,不选C
最终答案B