Question

【题目】— What does your sister do in her spare time?— She is into (singing/ sing), and she sings every morning.

Answer 1

【答案】singing
【解析】句意：---你姐姐在业余时间做什么？---她对唱歌感兴趣，她每天早上唱歌。be into doing对做某事感兴趣。into是介词，后跟名词或动名词，所以答案是singing。