Naturally after I tell my brother what to do he go and do the opposite．A. willB. mayC.

问题补充：

Naturally, after I tell my brother what to do, he go and do the opposite．

A. will

B. may

C. can

D. must

答案：

(答案→)A. will

B. may

C. can

D. must

解析：考查情态动词：A．will将要，会B．may可能，C．can 能，D．must必须，偏要，句意：很自然，我告诉弟弟怎么做后，他就会去做相反的。选A。