Question

Fill in the blanks with suitable prepositions
1. ........................they play ....................some time, they must return to the classroom ...............the class resumes ........................... the break . All students and parents are requested to cooperate .

Answer 1

When,For,Before,After

Answer 2

After they play for sometime, they must return to the classroom before the class resumes after the break. All students and  parents are requested to cooperate.