Question

Your mother wants you to go grocery shopping with her and you ate trying to persuade her that its not a good idea

Answer 1

You can be like I have a lot of homework to do and I need to study for a test tomorrow and so you wouldn’t have time or you are busy

Answer 2

Say you don’t feel very well and you just wanna stay home and get some rest and hopefully you’ll feel better,or that you were going to take a shower and get ready to do chores(clean)