Whocanhelpme?谁能告诉我答案:改写为同意句:Idon
谁能告诉我答案: 改写为同意句: I don't know which flat I'll buy. I don't know ____ ____ ____ buy.
I don't know which flat I'll buy. I don't know _which_ _flat _to_ buy. 都表示主语的动作，只不过表达形式一个用从句，一个用动词不定式。