I'm not sure when the train will arrive,I'm afraid.It___be late.A.shall B.will C.may

问题描述:

I'm not sure when the train will arrive,I'm afraid.It___be late.
A.shall B.will C.may

b

选B

选C
已经说了是不确定了,所以应该用may,表示可能的意思.

will 这是一句将来时