I don't know _ with him yesterday.A.what is the matter B.what the matter is C.what was the matter D.waht the matter was

I don't know how I can get there. 改为简单句I don't know _ _ _ there. I don't know where I can post this letter .=I don't know _ _ _this letter . I _ don't know what it is I don't know a _ o_ _of French. 有这么多纪念品,我不知道该选择哪一个There're _ _ souvenirs,and I don't know _ _ _ _.=I don't know _ _ _ _ _ (复合句) i don't know _ _ _(多少次) HE HAS TRIED. I don't know. 【合并英语句子】.I don't know.HOW old are you?合成I don'tknow_ _ _ _. 合并英语句子.I don't know.HOW old are you?合成I don'tknow_ _ _ _.. I don't know how I can get to the museum.（改为同义句)I don't know _ _ _ the museum I don't know how I can get to the museum.（改为同义句)I don't know _ _ _ the museum I don't know what's wrong with I don't know what the matter with me is? 陈述语序?I don't know what wrong is with me .I don't know what is wrong with me . I don't know what we will do this afternoon改为同义句I don't know _ _ _ this afternoon “i don't know you know i don't know I don't know if his idea will _ _ (有效). I really don't know when I will start my trip=I really don't know_ _ _my trip.