问题详情：
用所给词的适当形式填空
1. Don’t (run)in the classroom.
2. My mother (have)to walk with her dog after supper.
3. We can’t (eat)in the classroom.
4. We must (work)hard.
5. This is our (one)class today.
【回答】
1. run 2. has 3. eat 4. work 5. first
知识点：语法填空
题型：完成句子
