be crazy about sth 为……疯狂，
be crazy about doing sth 疯狂地做某事
热衷或热爱
I am crazy about playing basketball
我热衷于篮球。
所以应该填about
crazy 通常搭配介词 about，不管是人还是事物都一样，或者接不定式短语作补语，如：
be crazy about sb /sth / to do sth
详见例句：
It's pretty obvious he's crazy about you.
Judd's crazy about airplanes and flying.
She knew she would be completely crazy to refuse.
因此，问句中是一个空，就应该填 about，两个空就应该填 to play。
此外，没有 of 的搭配用法。
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