6) It __________ (start) to snow while she __________ (come) back from the opera. 7) When Pete __________ (open) the door, it __________ (rain). 8) While Evgeny __________ (sunbathe), his wife __________ (swim) in the sea. 9) She __________ (hear) a loud bang while she __________ (talk) to her friend. 10) While he __________ (take) a shower, his cats __________ (eat) his steaks.

Решение:

1. It started to snow while she was coming back from the opera.
2. When Pete opened the door, it was raining.
3. While Evgeny was sunbathing, his wife was swimming in the sea.
4. She heard a loud bang while she was talking to her friend.
5. While he was taking a shower, his cats were eating his steaks.

Ответ: started, was coming; opened, was raining; was sunbathing, was swimming; heard, was talking; was taking, were eating.