past continuous

Put the verbs into the correct tense
1. I (jog)---- in the park, when two squirrels----- (cross) my way.
2. Robert--------- (fall) off the ladder when he--- (pick) cherries.
3. Archimedes--------- (discover) the theory of buoyancy while he---(take) a bath.
4. When we--- (travel) around Ireland, we----- (meet) some very nice people.
5. While she------ (speak) on the phone, the milk -- --- (boil) over.
6. When I----- (leave) the house this morning, the sun -----(shine) .
7. Caroline------- (burn) her hand when she ------(iron) her clothes