)present continuous или past continuous 1. you (to test) new equipment when i rang you up yesterday? 2. he (to install) a new program now? 3. why she (to be) busy when i saw her yesterday? 4. when i noticed my friends, they (to sit) and (to write) something hurriedly. c) past simple или past continuous. 1. when we (to go) home, we (to see) many people in the yard. 2. when henry (to fix) the roof, he (to find) a nest. 3. when he (to paint) the ceiling, he (to break) the window. 4. when i (to wash) the floor, i (to find) my old mobile under the sofa.

1. Were you testing new equipment when I rang you up yesterday?
2.Is he installing a new program now?
3. Why was she busy when I saw her yesterday?
4. When I noticed my friends, they were sitting and writing something hurriedly.
c) Past Simple или Past Continuous.
1. When we were going home, we saw many people in the yard.
2. When Henry was fixing the roof, he found a nest.
3. When he was painting the ceiling, he broke the window.
4. When I was washing. the floor, I found my old mobile under the sofa.