（ ）She didn't remember _______ she returned that book to the library.A.whether B.that C.whereD.what

（ ）She didn't remember _______ she returned that book to the library.A.whether B.that C.where
D.what

A.

B
She didn't remember __that____ she returned that book to the library.
她忘了她把书还给了图书馆

. A.whether
主要看句子意思
他不记得 他把书还回图书馆了
连接起来，《是否 》 她不记得是否把书还回图书馆了

B