He works very hard ,so he is -----a top student in his class A.in the way to becomeB,on the way to becomeC.in the way to becoming D.on the way to becoming答案是D 为什么
问题描述：
He works very hard ,so he is -----a top student in his class A.in the way to become
B,on the way to become
C.in the way to becoming
D.on the way to becoming答案是D 为什么
答
D
因为on the way to doing sth "即将.“ 中的to 是介词, 介词后面必须接v-ing形式作宾语