关于定语从句

老师您好：请您帮我解析以下各题 。谢谢！ 4. I, ______ your good friend, will try my best to help you out. 答案B A. who is B. who am C. that is D. which am 5. The old man has two sons, ______ are lawyers. 答案C A. both of them B. both of who C. both of whom D. both of they 8. The man ______ has gone to Japan. 答案D A. whom I told you B. that I told you C. whom I told you about him D. I told you about 12. I can tell you ______ he told me last week. 答案D A. all which B. all what C. that all D. all that 20. It was in 1969 ______ the American astronaut succeeded in landing on the moon. 答案A A. that B. which C. in which D. when 22. Have you ever been to Shanghai, ______ I left ten years ago? 答案B A. where B. which C. that D. when 23. He has left Beijing, ______ a meeting is to be held. 答案B A. when B. where C. as D. which 25. Is it in that factory ______ “Red Flag” cars are made?答案C A. in which B. where C. that D. which 4. He must be from Africa, ______ can be seen from his skin. 答案B A. that B. as C. it D. what 6. ______ is natural, he married Mary. 答案D A. It B. What C. Which D. As 9. He paid the boy 10 dollars for washing ten windows, most of ______ had not been cleaned for years. A. these B. those C. that D. which 答案D 12. This is one of the means ______ the electric energy is conducted from one place to another. A. by which B. by that C. through which D. through that 答案A 13. The place ______ you are going to visit is the ruin of a place. 答案D A. in which B. at which C. where D. which 21. China has hundreds of islands, ______ we all know. 答案C A. in which B. at which C. of which D. which 22. She wrote a letter to her father, ______ she made her secret known. 答案C A. which B. that C. in which D. where 25. I have many books, the best ______ was borrowed by Mary. 答案B A. about them B. of which C. among them D. in which 2007年3月30日杨子

解题思路： 定语从句
解题过程：
你真的很善思考！一下子提交了这么多的问题！只是很抱歉，网站有规定一次只能提交一个问题，我只好回答你的一个问题了。
4. 这是一个非限制性定语从句, 排除C .先行词是I,指人,所以不能用which ,应用who .定语从句的谓语应与主语I 保持一致.所以选B .
最终答案：略