He collected so many stamps not because he wanted to make money but_____ to learn art.

A. hoping to teach the children　　　 B. hope teaching the children

C. I hope to teach the children　　　　 D. to teach the children

He collected so many stamps not because he wanted to make money but_____ to learn art.

A. hoping to teach the children　　　 B. hope teaching the children

C. I hope to teach the children　　　 D. to teach the children