2．请把第二句改为which引导的定语从句。

There might be a garden on the roof which can allow people to keep the house cool and grow vegetables to eat.

3．请用as引导的时间状语从句改写第三句。

For example，the housewife can cook a delicious meal as she works outside.

　　用适当的过渡词语，把以上词汇和句式，再加上联想内容，组成一篇100词左右的英语短文。

参考范文

The House of the Future

　　What will the house of the future be like？I think great changes will take place in the future houses.

　　Firstly，the building materials should be improved so that the temperature inside the house can be adjusted according to the weather.Secondly，there might be a garden on the roof which can allow people to keep the house cool and grow vegetables to eat.Thirdly，the color of the wall inside may change itself as the owner's emotion changes.Fourthly，all the appliances in the house will be controlled by the computer.For example，the housewife can cook a delicious meal as she works outside.

　　In a word，the house of the future should be an eco­friendly and a comfortable place to live in.