they don't know they have lost the purse 这句话对不对

they don't know they have lost the purse 这句话对不对 I don’t know _______ they have passed the exam. They don’t know the answer__________this question. They are the teacher这句话对不对? They Don't Know 歌词 They don't know what--- they don`t really know i don't know where they have gone I don't know ____ they have passed the exam.A.what B.if C.wh I don't know _____ they have passed the exam or not To cherish the present,don't wait for lost just know sad这句话是 But they don't know the_____________to the park.