8 класс. Enjoy English. Unit I. Progress Check

Макe all the changes and additions neces¬sary to create sentences from the following sets of words and phrases. Be careful with grammar tenses (the Past Continuous and the Past Simple).
Where / you / stand / when / you / hear / this terrible sound?

• Where you were standing when you heard this terrible sound?
• Where were you stooding when you heard this terrible sound?
• Where were you standing when you heard this terrible sound?