какие слова нужно вставить вместо скобок : ответьте срочно пж.
1. Astana is the captal ( ) Kazakhstan.

2. I started school ( ) the age of seven.

3. Nine years ( ) classes are compulsary.

4. Our school year usually begins ( ) the first ( ) September.

5. ( ) the first of September we get acquainted ( ) our teachers.