一道简单的高一英语题，请各位英语高手帮忙做一下，谢谢！

Question

问题：Get into groups of four.The first person begins with a sentence and other people in the group sdd extra and different infourmation using attributive clauses with "when,why,prep+which or prep+whom”
Example:S1：The school was very large.
S2:The school in which I learned judo was very large.
S3:The school to which I was sent was very large.
S4:The school at which I studied French was very large.
You can make your own sentences,but other possible sentences are:
1.The person was willing to help.
2.The room was dusty.
3.The time was very pleasant
4.The reason was known to all.
请各位高手的正确率尽量高一些，有酬谢！

Answer 1

1.The person was willing to help.
The person to which he talked was willing to help.
The person with whom he came was willing to help.

2.The room was dusty.
The room in which he was staying was dusty.
The room to which he was assigned was dusty.

3.The time was very pleasant.
The time when we were still together was very pleasant.
The time about which you wrote was very pleasant.

4.The reason was known to all.
The reason why he was late was known to all.
The reason for which you asked of him was known to all.

Answer 2

S1: The room was dusty.
S2: The room in which I stayed last night was dusty
S3: The room to which I was assigned last night was dusty.
S4: The room outside which I was waiting last night was dusty.