Question

вставьте предлоги Nine years___ classes are compulsaty Our school year usually begins ___ the first ___SEmptember ____ the first of September we get acquainted ____ out teachers

Answer 1

1 (может of или at, не знаю)

2at

3of

4at

5with

Answer 2

1) in

2)at 

3)of

4)on

5)with