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-WhencanIseemygrandson,John?-Don'tworry,Granny.Hebehomeatanymoment.A.shoul...-WhencanIseemygrandson,John?-Don'tworry,Granny.Hebehomeatanymoment.A.shouldB.wouldC.couldD.might为什么不能用could呢

题目详情
-When can I see my grandson,John?-Don't worry,Granny.He_______be home at any moment.A.shoul...
-When can I see my grandson,John?
-Don't worry,Granny.He_______be home at any moment.
A.should B.would C.could D.might
为什么不能用could呢
▼优质解答
答案和解析
should ,由at any moment,得知,在任何时候,她都应该在家的,
must - can - may -should - would - could -might,推测语气 由肯定到不确定,一次减弱