问题
选择题
There are so many things I wish I had known while _____ up
A．grow
B．growing
C．grown
D．grew
答案
B
题目分析：考查状语从句的省略：句意：有很多事情是我在成长的过程中希望能做的。While后面是省略句，原句是while I am growing up，当主从句的主语一致的时候，可以省略状语从句的主语和be动词，所以选B。