用developing 还是 the development of I participated in developing/the development of a program.

用developing 还是 the development of I participated in developing/the development of a program.
用developing 还是 the development of
I participated in developing/the development of a program.

用developing 还是 the development of I participated in developing/the development of a program.
I participated in the development of a program.
这里,developing是形容词,有developing country,而这里只能用the development of.指的是这个项目的发展.^-^

I participated in the development of a program...是 development of。。。
developing是形容词，要么是动词的现在进行式，虽说介词之后跟ing，但participate in 后只跟doing或sth，一般不跟 doing sth，所有是the development of ，名词形式