поставьте глагол в скобках в Past Continuous Tense:
1)The boy jumped off the train while it (move)
2)He (walk) across the bridge when I saw him
3)When I (listen) to the radio last night I heard a loud knock
4)I took another cake when you (not look)
5)She cut her finger while she (cut) bread and butter.

1) The boy jumped off the train while it (was moving).
2) He (was walking) across the bridge when I saw him.
3) When I (was listening) to the radio last night I heard a loud knock
4) I took another cake when you (were not looking)
5) She cut her finger while she (was cutting) bread and butter.