I don't know where I can post this letter .=I don't know _ _
I don't know where I can post this letter .=I don't know _ _
I don't know when I can post this letter .
--Excuse me,where's the post office --Sorry,I don't know.--_
I don't know when I can post the letter.改为同义句I don't know __
i don't know what this word means,同义句转换 i don t know __ __ _
( )I am,weak in English.I don't know _.
i don't knoe which scarf i should choos.i don't know _ _ _ _
与I don't know where your house is.的同义句I don' know the_____ _
I don't knokwhere I can buy this kind of boots.=I don't know
将i don't know how i can do that换为i don't know _ _ _that的同义句一
I _ don't know what it is
I don't know a _ o_ _of French.