Simple Past or Past Continuous?

 

1) While I (walk) to school I John. (see)

2) When I (help) in the kitchen Mary (come).

3) While she (cook) the soup the children (play).

4) While they (play) cards the baby (sleep)

5) While I (work) in the garden my uncle (call)

6) Carol (watch) TV while Bob and Peter (play) football

7) While she (wash) her hair the baby (begin) to cry

8) A strong wind (blow) when the plane (land)

9) When she (play) tennis it (began) to rain.

10) While I (watch) TV the lights (go) out.