答案:填singing,dancing
即:My little sister is good at 【 singing 】(sing) and 【 dancing 】(dance).
解析:at是介词,后面应该用名词或动名词,而singing和dancing就是动名词形式,be good at doing sth 擅长做某事
翻译:我的小妹妹擅长唱歌,跳舞.
答案:填singing,dancing
即:My little sister is good at 【 singing 】(sing) and 【 dancing 】(dance).
解析:at是介词,后面应该用名词或动名词,而singing和dancing就是动名词形式,be good at doing sth 擅长做某事
翻译:我的小妹妹擅长唱歌,跳舞.