来自孟垂茁的问题
【Shesaidshereturnedthebooktothelibrary.I'msureshe____.()A.takesB.isC.wasD.did】
She said she returned the book to the library.I'm sure she ____.()
A.takes
B.is
C.was
D.did


【Shesaidshereturnedthebooktothelibrary.I'msureshe____.()A.takesB.isC.wasD.did】
She said she returned the book to the library.I'm sure she ____.()
A.takes
B.is
C.was
D.did
答案:D;takes采取;拿;is,是,系动词;was,是,is的过去式;did,助动词do的过去式;根据句中描述I'msure可知后面的句意应是:她还了;因为“shereturnedthebooktothelibrary”是一般过去时态;可知I'msure后面的宾语从句用一般过去时;故用did,did指代前面的returned;故选D.