Употребите Past Simple либо Past Progressive:1)When the telephone (to ring) I

Употребите Past Simple либо Past Progressive:

1)When the telephone (to ring) I (to bake) a cake and (to ask) Mary who (to do) nothing at the moment to answer the call.
2)Why you (not to attend) the lecture on Saturday? Professor Brown (to speak) about UFO and other mysterious objects.