Complete the sentences with the correct past from of the verbs

1. When I got to the park, my friends had sat by the lake.

2. After I had seen the doctor, I had a blood test.

3. By the time I found my phone, it had stopped ringing.

4. I didnt speak to Matt because he had already gone home.

5. I put in too much sugar while I was making the cake.

6. Anna and Ian were late for class this morning. Where had they been?

Два деянья в прошедшем, одно из которых произошло в более отдаленном прошлом (выражается формой Past Perfect) и закончилось до того, как вышло иное деяние (выражается формой Past Simple).