I don t know where to travel.为什么不是where to travel to?

I really don't know where to I don't know where you were. i don't know where i should goi don't know ______ ______ ______ 填空:I don't know what ______ ______ .I don't know where ____ ____. I don't know. now i will survive don't know where and don't know why搜索 i don't know where she __(live) i don't know where to go同义句转换 I don't know where Linda ___ (live) I don't know where to go句型分析 I don't know where the park is的提问 急I don't know where they live.改成一般过去时? But I don't know where t______ find them I don't know where he ___(go) yesterday don't where he I know is连词成句 I don't know where he is意思 i don't know .where can we go合成一句话 ------where is the clothes s________?------sorry,I don't know.