знайти кути трикутника з вершинами а( -1;√3) в (1;√-3) С (0,5;√3) знайти кут В и кут С​

Поставьте глаголы в скобках в PAST SIMPLE или PAST CONTINUOUS

1. Sandra (not/sleep) when her father (arrive)

2. George (send) a letter at 8p.m. last night

3. I (read) a book when I (hear) my sister shouting

4. (You/watch) the film when the phone (ring) ?

5. Susan (see) a bright light when she (walk) down the street

6. She (do) the washing up when the plate (break)

7. When he (travel) on the bus to work, he (remember) that is was his wife's birthday

8. The children (study) while their nanny (prepare) dinner.

9. While you (be) out, the postman (come) and (deliver) these letters

10. Tom (watch) TV when the phone (ring)