— Look at the boy playing basketball on the ground. Is it George?— It be him. He told me

— Look at the boy playing basketball on the ground. Is it George?
— It be him. He told me he would play basketball after class, but he’s not sure.
A. mustn’t
B. must
C. can’t
D. may

A. mustn’t B. mustC. can’t(答案→)D. may解析：mustn’t 禁止，一定不；must必须，一定； can’t不能，可能不；may可以。句意：看这个在操场上打篮球的男生，是乔治吗？——不可能是他。他告诉我他会在课后打篮球，但是他不确定。情态动词之间的最大区别就是表达语气的不同，结合语境可知选D。

谢谢了