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一、写作词汇 预习该部分的词汇,完成下列对话。写出画线部分的汉语意思。 1.—The former 　　　　　owner of the house had not left any address.  —So it is difficult to find him. 2.—How can I be fluent 　　　　　　　　in speaking English?  —You should make full use of 　　　　　your time and practice as much as possible.  3.—I learned from the Internet that a boy donated 　　　　his organs.  —Yes.His kindness 　　　　　moved a lot of people.  4.—When did you graduate 　　　　　from college?  —In 1991.

以前的

流利的

好好利用

捐赠

善意

毕业