I was doing the exercise on putting verbs in appropriate tenses when I stumbled upon the following sentence:
Ann (postpone) making the beds until she (do) the shopping. An hour later, when she returned...
The whole story is in the past so I guess the first should be simply 'postponed'. As for the second, I know we can't use the future after 'until', so 'would do the shopping' (shifting 'will' into 'would' as the text is in the past) is incorrect too. Should I emphasise the action and use past perfect? This would let me illustrate that 'going shopping' is to happen earlier than 'making the beds'. Or is it again correct to use past simple because (it seems to me that) there are no obvious reasons for using a perfect tense?
I'm completely at a loss so I would be grateful for any hint.