英语作业Unit 11 Could you please clean your room的问题

英语作业Unit 11 Could you please clean your room的问题
A:Mke,____ you please____me to do the laundry?
B:Sorry,Mum.I am too busy to help you.I am writing a letter____my grandma.
A:Really?____you tell me____you say in the letter?
B:Sure.I tell my grandma I can____many chores now.I like____my bed____I would like my bed to be clean____tidy.
Good boy!After you finish ____the letter,come to help me.
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希望在回答的,同时并讲一下为什么这样填?