Помогите, пожалуйста! Поставьте предложения в Past Simple or Past Continuous

1. David (to come in )_________ when the children (to write)_________ a dictation.

2. Mike (to phone)__________ me, when I (to have)___________ breakfast.

3. Mary (to speak)___________ to me when her little brother (to throw)___________ her bag out of the window.

4. We (to meet)___________them when we (to stand)_________ at the bus stop.

5. She (to buy)_________ a present for her Granny when I (to see)_________ her.

6. When his parents (to have)_________ dinner Tom (to arrive)_________.

7. He (to sleep)__________ when his mother (to come)________ back.

8. A few days later while he (to have)_________ tea, the postman (to bring)__________ him a letter from his friend.

9. When the teacher (to come)___________ into the classroom, the children (to sit)____________ at their desks.

10. One day while she (to read)____________ a book, a big black fly (to sit down)____________ on her book.