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06-09-2021
11:17 AM
Dear Mr/Ms
My name is Thi Tran. I bought your product. Now I need some information.
I have a book, I have a card, but my classcourse doesn't use this card. I have a book question as picture. I don't have any course class. I want to check the expalnation example in the book. How can I do?
Would you like to instruct me how to check solution for my problem? I appreciate your response.
I am looking forward to hearing from you.
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questions of "try it"
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