My mother doesn’t know this morning. A. what to doB. what does do C. how to do D. why doe

My mother doesn’t know this morning.
A. what to do
B. what does do
C. how to do
D. why does do

(答案→)A. what to doB. what does do C. how to do D. why does do解析：“疑问词 + 动词不定式”是英语中常用的一种结构。在句中可以作主语、动词或介词的宾语以及表语。本句的含义是我妈妈不知道今天早晨该做什么，其中what to do做know的宾语。C项是错误的，正确的表示是how to do it。故选A。

这个答案应该是对的