This________be my textbook.Mine is rather oldA.mustn'tB.can'tC.sh_英语解答

This________be my textbook.Mine is rather old
A.mustn't
B.can't
C.shouldn't
选哪个,原因
为什么不能选A啊？表示肯定啊

人气：376 ℃　时间：2019-10-27 10:57:36

解答

B
must用于肯定句,其否定形式是can't.