1.It was very cold yesterday.(对very cold 提问）What's the weather like yesterday?
2.October 1is our National Day.(变为同义词）
Our National Day is October 1.
3.Tim was first in the race.(对Tim提问）
Who is first in the race?
4.I am a middle school student.(改为复数形）
We are middle school students.
5.Peter was late for school.(改为一般疑问句）
Was Peter late for school?