I don't know a _ o_ _of French.

I don't know a _ o_ _of French. I don't like s_ o_,either这个句子的s_和o_各填什么? 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 . 宾语从句I don't know _ to visit the old man.A whether B if I _ don't know what it is 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 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 1.There is a new washing machine in the room.we know.(合并为一句)we know _ _ a new washing machine in the room2.Will he come back?i don't know.(合并为一句)I don't know _ _ _ come back. I don't know if his idea will _ _ (有效). i don't know _ good they could have done.A.howB.that C.what D.which