Past simple or past continuous 1)the baby (not/sleep) when granpa (arrive) объяснить почему)) 2)while he (travel) on the bus to work,he (remember) thet it was his wife's birthday. 3)(the children/study) while their nanny (prepare) diner? 4)while you (be) out,the postman came and (deliver) these letters.
1. wasn't sleeping , arrived
2.was travelling, remembered
3. The children were studying, prepared
4. were , delivered
в 3-ем не уверена но обычно после while идет past continuous