问题描述：
英语翻译
彼得一定是已经把这本书看完了,因为他已经把书还给我了.
Peter _____ _____ _____ reading this book because he has returned it to me.
彼得一定是已经把这本书看完了,因为他已经把书还给我了.
Peter _____ _____ _____ reading this book because he has returned it to me.
问题解答：
我来补答展开全文阅读