i don't know this word.

I don't want know .this why i don't know this word. This box is too heavy.I can't carry( ).Don't worry,Let( )help( ).wo I don't know. I really don't know how to explain this pnblem i don't know how()(tell) you about this I don‘t know whose bike is this.怎么改错? Whose watch is this?( ),I don't know. I don't know how this ______(发生) i don't know how to solve this problem. because I don't know this area good 翻译 this really don't know “i don't know you know i don't know I don't know where I can post this letter .=I don't know _ _ _this letter . I don't know if I____anyone of the party this evening..填know 还是 will know i don't know what this word means,同义句转换 i don t know __ __ __this word wo don't like I don't know when I can post this letter .I don't know when I can post this letter.(改为同义句）I don't know ( ) ( ) ( ）this letter.