She is good ______playing the piano and good her students ,which is good ____the students

She is good ______playing the piano and good her students ,which is good ____the students

题目
She is good ______playing the piano and good her students ,which is good ____the students
A at for to B to to for C at to for Dto at for我选的是第四个,你认为囊
答案
be good at擅长做某事,第一个为at
sb be good to sb.某人对某人好第二个是to
sth be good for sb.某事某物对某人好.第三个是for,因为这个是非谓语从句,主语是主句,非人,所以用for.
我觉得正确答案是c
举一反三
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