—You look a bit pale. Shall I take you to see the doctor?

—No, thanks. I'll take some pills and see how it _________. [ ]

A. comes

B. goes

C. is

D. has

调查表明，投诉的客户只占全部不满意客户的（）%还不到，（）%的不满意客户是不会投诉的，他们只会停止购买。