1.He is good at English， _______ we all know.

　　A. that B. as C. whom D. what

　　2.The pen _______ he is writing is mine.

　　A. with which B. in which C. on which D. by which

　　3.Do you know the year _______ the Chinese Communist Party was founded?

　　A. which B. that C. when D. on which

　　4.The place _______ interested me most was the Children‘s Palace.

　　A. which B. where C. what D. in which

　　5._____ she was very tired， she went on working.

　　A. As B. Although C. Even D. In spite of

　　參考答案：

　　1.正確答案：B答案解析：as作關(guān)系代詞可以單獨(dú)用來(lái)引導(dǎo)非限制性定語(yǔ)從句。這時(shí)as所指代的不是主句中某個(gè)名詞，而往往指代整個(gè)主句的含義。as在從句中可以作主語(yǔ)、賓語(yǔ)。從句可放在主句后，也可置于主句前。在本句中，as作賓語(yǔ)。

　　2.正確答案：A答案解析：with which是“介詞+關(guān)系代詞”結(jié)構(gòu)，常用來(lái)引導(dǎo)定語(yǔ)從句。with有“用”的意思，介詞之后只能用which，不能用that. with which在定語(yǔ)從句中作狀語(yǔ)，即he is writing with a pen.

　　3.正確答案：C答案解析：when是關(guān)系副詞，表示時(shí)間，在定語(yǔ)從句中作時(shí)間狀語(yǔ)。

　　4.正確答案：A答案解析：which用作關(guān)系代詞，在定語(yǔ)從句中作主語(yǔ)。

　　5.正確答案：B答案解析：although：雖然，盡管。符合句意。