英语7.Mr Bush is on time for everything.How ______ it be that he was late for the opening ceremony?

英语7.Mr Bush is on time for everything.How ______ it be that he was late for the opening ceremony?

题目
英语7.Mr Bush is on time for everything.How ______ it be that he was late for the opening ceremony?
7.Mr Bush is on time for everything.How ______ it be that he was late for the opening ceremony?
a.can b.should c.may d.must
为什么
答案
can 其实用could更好
how can/could it be 是怎么可能的意思 你下次记住就好了
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