选D.be glad with sth.
be glad to do 乐于做…；高兴做某事
I shall be glad for you to come.你能来我将很高兴.
I'll be glad to do you a favour.我愿意为你效劳.
I am glad about his new job.我为他的新工作感到高兴.
Glad to that.很高兴听您这么说.