Smith: 2.（）it is helpful to you
正确答案：I’m glad
Smith: 2.（）it is helpful to you
5次阅读
You: Yes, it’s indeed a very good reference book. I don’t know how I shall express 3.（）.
You: Good morning, Prof. Smith. Thank you for the book you sent me. It is 1.（）to my term paper.
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