She didn’t know ________ to express her ideas in English clearly in public.A) which B) why C) what D) how

She didn’t know ________ to express her ideas in English clearly in public.A) which B) why C) what D) how
She didn’t know ________ to express her ideas in English clearly in public.
A) which B) why C) what D) how

She didn’t know ________ to express her ideas in English clearly in public.A) which B) why C) what D) how
D她不知道如何在公共场合用英语表达自己的想法!
疑问词+不定式作了know的宾语
其它意思不对,A是哪一个,B是为什么 C是表达什么,所以都不对