Помогите воткнуть в нужную форму глагола " to be" 1.Ann ...

Помогите вставить в подходящую форму глагола " to be"
1.Ann ... ten years old.
2.Mary and Bob ... students.
3.Susan ... a doctor .
4. ... Ben a student?
5. ... he in the classroom?
6. ... she ill?
7. Her friends ... teachers.
8.Their children ... nice .
9.These ... desks.
10.That ... a blackboard.
11.He ... a British diplomat.
12.She ... from London.
13. ... you from New York.
14.He ... at home yesterday.
15.Peter ... in Paris last year.
16. I ... ill last month.
17.We ... in the cinema on Sunday.
18.She ... in hospital two days ago.
19.His friends ... at the sea in summer.
20. Kate ... happy to see us.