四、补全对话。
()1. —What day is it today?
—
()2. —
—By bus.
()3. —How many art lessons do you have?
—
()4. —
—Me too.
()5. —Are these your music books?
—
A. I have four.
B. Yes, they are.
C. My favouritebject is maths.
D. How does Tom go to school?
E. It's Friday.

1. E
2. D
3. A
4. C
5. B

我们可以根据问句和答语的逻辑匹配选项：
1. 问句“What day is it today?”是询问今天星期几，对应回答E选项“今天是星期五”。
2. 答语“By bus.”是出行方式，对应问句D选项“Tom怎么去上学？”。
3. 问句“How many art lessons do you have?”是询问数量，对应回答A选项“我有四节”。
4. 答语“Me too.”表示和对方情况一致，对应陈述句C选项“我最喜欢的科目是数学”。
5. 问句“Are these your music books?”是Are these引导的一般疑问句，对应肯定回答B选项“是的，它们是”。

五、Lucy 在介绍自己的课程安排，你能根据她的介绍做一份英文课程表吗？
I'm Lucy. I have Chinese, maths and English on Monday, Tuesday, Wednesday, Thursday and Friday. On Monday, Wednesday and Friday, I have music and art. And I have science, PE and IT on Tuesday and Thursday.
Timetable

完整填写后的课程表如下：
| Period(节) | Mon. | Tue. | Wed. | Thu. | Fri. |
| ---- | ---- | ---- | ---- | ---- | ---- |
| 1 | Maths | Maths | Maths | Maths | Chinese |
| 2 | Chinese | English | Chinese | English | Maths |
| 3 | English | Chinese | English | Science | English |
| 4 | art | Science | art | Chinese | art |
| 5 | Music | PE | Music | PE | Music |
| 6 | （无课程） | IT | （无课程） | IT | （无课程） |

首先梳理Lucy的课程安排规则：
1. 周一至周五每天都有Chinese、maths、English三门主课；
2. 周一、周三、周五额外增设music和art两门课，每天共5门课程；
3. 周二、周四额外增设science、PE、IT三门课，每天共6门课程。
结合课程表已给出的填写内容，将剩余空格按规则填入对应科目即可，科目首字母注意规范大写，副科顺序可合理调整，只要符合日期对应的课程要求即可。