---- Putting on a happy face not only helps us make friends but also makes us feel better.
---- .
A. I’d love to
B. I’m with you on that
C. It’s up to you
D. It’s my pleasure
网友回答
A. I’d love to
B. I’m with you on that
C. It’s up to you
D. It’s my pleasure
解析：
Be with sb. on sth.就某事支持某人；同意某人说的话。