I'm glad ______ what you have done.A for B at C to D with选哪个?为什么?

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I'm glad ______ what you have done.A for B at C to D with选哪个?为什么?
I'm glad ______ what you have done.
A for B at C to D with
选哪个?为什么?

I'm glad ______ what you have done.A for B at C to D with选哪个?为什么?
D
be happy/glad with 为.感到高兴 固定搭配

D