询问并回答科目喜好 — 英语填空题
题目
阅读对话，补全所缺单词（每空一词）。Lily: Hi, Tom. What's your favourite ___? Tom: I like Science and Music. But Science is on Monday and Friday. Music is only on Wednesday. I like the subject on Wednesday best, because I can sing many songs. So my favourite subject is ___.