Fill in the blanks with suitable question tags.
1. He is a good boy,_________?
2. We are safe,_________?
3. Let's do it now,_______?
4. There were many flowers,___________?
5. You should be there on time,_________?
6. We cannot finish it,__________?
7. He hasn' given it to me,_______?
8.They don't believe me,________?