Выберите правильные формы, чтобы завершить предложения. ( Дам 35 баллов )
1.When my telephone (rang/was ringing), I (watched/was watching my favourite TV programme.
2.My friend and I (danced/were dancing) while my sister (played/was playing) the piano.
3.While Mr Brown ( drove/was driving) home, his family (worked/were working) in the garden.
4.When the lesson began, all the pupils (sat/were sitting) at their desks.
5.John ( rode/was riding) in the park when he (saw/was seeing) his friend Sam.