1。 Tom bought a lot of books in the library，most of（）were written in English。
A that B which C what D whom
2. We enjoyed ourselves very much in the party （）last night。
A being held B held C to be held D holding
3. He did not stop his research。Nor （） let the disease stop hime from living the kind of life he had always dreamt of。
A did he B had he C he did D he had
4. We should stop here since we have been walking for hours。------（）I am a little tired
A I beg your pardon？ B What do you mean？
C Sorry，i am not sure D you are right
5.（）in his test papers，he did not notice my coming
A Having absorbed B absorbed C absorbing D to be absorbed
选B，本题考查定语从句。先行词是books，most of the books...从句中缺少of的宾语，故用which。当然介词提前的定语从句，连接词只有which。
选B，还是定语从句，可以这么说。句意为昨晚的晚会我们玩得很开心。晚会是昨晚办的，如果用不定时表示未发生，将要发生，不合。晚会是被举办的，所以需要被动语态。完整的应该是which was held last night.此处的which was可以省略。故可以看做是后置定语。
选A，应该考查倒装句。nor这句要求倒装。但是根据语意，还有上下语境，应该是过去式。
选D，情景会话。A是听不清麻烦别人再说一遍，其他几个都不合语境。
选B，be absorbed in表示沉浸于，这里过去式表状态。表示he的状态的。此处语法结构为伴随状语。
以上就是我的解答，希望对你有帮助。楼主你高三了吧，这题目和高考有一拼啊！