101.He is good at English， _______ we all know.
A. that B. as C. whom D. what
102.The pen _______ he is writing is mine.
A. with which B. in which C. on which D. by which
103.Do you know the year _______ the Chinese Communist Party was founded?
A. which B. that C. when D. on which
104.The place _______ interested me most was the Children‘s Palace.
A. which B. where C. what D. in which
105._____ she was very tired， she went on working.
A. As B. Although C. Even D. In spite of考试吧
参考答案：
101.正确答案：B答案解析：as作关系代词可以单独用来引导非限制性定语从句。这时as所指代的不是主句中某个名词，而往往指代整个主句的含义。as在从句中可以作主语、宾语。从句可放在主句后，也可置于主句前。在本句中，as作宾语。
102.正确答案：A答案解析：with which是“介词+关系代词”结构，常用来引导定语从句。with有“用”的意思，介词之后只能用which，不能用that. with which在定语从句中作状语，即he is writing with a pen.
103.正确答案：C答案解析：when是关系副词，表示时间，在定语从句中作时间状语。
104.正确答案：A答案解析：which用作关系代词，在定语从句中作主语。
105.正确答案：B答案解析：although：虽然，尽管。符合句意。
