Complete the sentences with the correct past from of the verbs

Complete the sentences with the correct past from of the verbs given.
1.When I got to the park, my friends ...(sit) by the lake.
2. After I had seen the doctor, I ..(have) a blood test.
3.By the time I found my phone, it ..(stop) ringing.
4. I ...(not speak) to Matt because he had already gone home.
5. I put in too much sugar while I ..(make) the cake.
6.Anna and Ian ...(be) late for class this morning. Where had they been?