My brother is busy ____ the birthday party for my mother.A.having_英语解答

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

人气：131 ℃　时间：2019-08-18 23:01:01

解答

c是错的答案是abe busy doing的结构3Q~意思是正在忙着做某事不客气