Based on 4b, ex.3
Put the words in boxes into the past simple or the past continuous.

Past Simple vs Past Continuous

1. While he
   [ ] on the bus to work, he
   [ ] that it was his wife's birthday.
2. [ ] while their nanny
   [ ] dinner?
3. While you
   [ ] out, the postman came and
   [ ] these letters.
4. [ ] the film when the phone
   [ ]?
5. John
   [ ] a bright light as he
   [ ] down the street.
6. The baby
   [ ] when Grandpa
   [ ].

Sources:

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