I have a last question.It's urgent.
While I was getting ready for school, my mum made/was making breakfast for me.
I think I should you the past continuous in both cases because the two actions are continuous.
Either choice will work fine. The two past progressive verbs emphasize the simultaneous nature of the actions.
You are correct that the past continuous tense can be used to describe two continuous actions happening at the same time in the past. In this case, you can use either "made" or "was making" in your sentence. The difference lies in the emphasis you want to convey.
If you use "made," it suggests that your mom completed the action of making breakfast at some point in the past. For example, "While I was getting ready for school, my mom made breakfast for me" implies that your mom finished making breakfast before you left for school.
On the other hand, if you use "was making," it implies that your mom was in the process of making breakfast while you were getting ready for school but does not indicate whether she finished or not. For example, "While I was getting ready for school, my mom was making breakfast for me" suggests that the action of making breakfast was in progress while you were getting ready for school, but it doesn't give any information about when it was completed.
So, depending on the context and the specific meaning you want to convey, you can choose between "made" or "was making" in your sentence.