難度:★ 考點(diǎn):情態(tài)動(dòng)詞辨析
1.That man______be my English teacher.He has gone to Canada.
A.needn't B.mustn't C.can't
2.-Look!A book is on the floor.Whose is it?
-It______be Rick's.It has his name on it.
A.mustn't B.can't C.must D.need
3.一Shall I tell Jim the good news?
一No,you________.I've told him already.
A.wouldn't B.needn't C.shouldn't D.mustn't