My brother is busy ____ the birthday party for my mother.A.h

題目:

My brother is busy ____ the birthday party for my mother.A.having B.to have C.on having

解答:

c 再答: 是錯的
再答: 答案是a
再答: be busy doing的結構
再問: 3Q~
再答: 意思是正在忙著做某事
再答: 不客氣

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