Put the verbs in brackets in the past continuous.

Решение:

1. A: What were you doing last night at 7:00 pm?
   B: I was chatting (chat) on the Internet with my friends.
2. A: What were your parents doing at 5:30 pm yesterday?
   B: They were cooking (cook) dinner.
3. A: Was your sister sleeping (sleep) at 8:00 am this morning?
   B: No, she wasn't sleeping (not/sleep). She was taking (take) a shower.