1) Sue (play) the violin for her guests when I (arrive) 2) When the film (start), my father
(have) a shower.

3) While I (eat) lunch, I (spill) some soup on my trousers.​

1) Sue was playing the violin for her guests when I arrived

2) When the film started, my father

was having a shower.

3) While I was eating lunch, I spilled some soup on my trousers.

1. Sue was playing the violin for her guests when I arrived

2. When the film started, my father was having a shower.

3. While I was eating lanch, I spilled some soup on my trousers.

Вроде так