Помогите плиз!!! Complete the sentences with the past simple or past

Помогите плиз!!! Complete the sentences with the past simple or past continuous of the words in brackets.
1) I ... (not talk) when the teacher arrived.
2) we were eating when my friend ... (phone).
3) while I was walking home, it ... (start) to rain.
4) the earthquake happened while people ... (sleep).
5) while mum was driving home, she ... (see) an accident.
6) a lot of tourists ... (visit) Thailand when the tsunami happened.