I'm afraid Dr.Lin's plane will be a little late,so he ____not able to get here to take part in in the conference on time.A.can B.might C .should D.must

I'm afraid Dr.Lin's plane will be a little late,so he ____not able to get here to take part in in the conference on time.A.can B.might C .should D.must
I'm afraid Dr.Lin's plane will be a little late,so he ____not able to get here to take part in in the conference on time.
A.can B.might C .should D.must

I'm afraid Dr.Lin's plane will be a little late,so he ____not able to get here to take part in in the conference on time.A.can B.might C .should D.must
might
表示对将来情况的一种可能性的推测.

呃。。。我需要有人帮我辨析B和C的区别。。。

B
might是对将要发生事情的可能性的推断
而can，should，must等词是确定性较强的论断
可能性推断的根据是开头的I'm afraid，"恐怕.."，即时体现出事情的不确定性

欢迎追问，记得采纳哦！！表推断的否定不是can?can也是带有很强的确定性，一般都是用could，在这里could和might都可以用...

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B
might是对将要发生事情的可能性的推断
而can，should，must等词是确定性较强的论断
可能性推断的根据是开头的I'm afraid，"恐怕.."，即时体现出事情的不确定性

欢迎追问，记得采纳哦！！

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B
首先A的can和be able to都是能的意思，规定任何情况下都不能用can be able to
Cshould not 不应该，不符合语义
Dmust肯定性100％，但前面I'm afraid 我恐怕 是不太肯定的推测 所以也不选
最后B是也许 语义通顺 妥妥的~