问题详情：
根据要求完成下列句子。每空一词。
1. Tom has some homework to do today. (改为否定句)
Tom homework to do today.
2. They watch TV three times a week. (对划线部分提问)
they watch TV?
3. 我们都正在为聚会做准备。(完成句子)
We are all the party.
4. 作为朋友，我们经常互相帮助。(完成句子)
As friends, we often .
5. 你进办公室之前应该先敲门。(完成句子)
You should the door you get into the office.
【回答】
1. doesn’t have any
2. How often do
3. getting ready for
4. help each other
5. knock on; before
知识点：句型转换
题型：未分类
