9.For the first time you take part in a race, ________ is very normal to feel tense.
答案：it 解析：考查it的用法。句意：第一次参加比赛，你感到紧张是很正常的。it在此作形式主语，真正的主语是后面的不定式to feel tense。
10.—Have you got any books on English grammar? I'd like to borrow ________.
—Yes, here you are. But you must return it by Friday.
答案：one 解析：句意：——你有关于英语语法方面的书吗?我想借一本。——是的，给你。但你必须在周五之前归还。此处one表示同类，因为不知道是哪本书，只知道是本英语语法书。
11.Mary's parents admitted that she was always contrary to a wish of ________.
答案：theirs 解析：句意：玛丽的父母承认她总是和父母的愿望相反。此处theirs相当于their wish。
12.Mr Blark, ________ who we all admire，is a kind but strict teacher.
答案：one 解析：句意：布莱克先生是一个善良而又严格的老师，他是一位我们都很尊敬的老师。此处one=a teacher指一类老师。不能用the one, the one表示特指。
13.—What do you think about smoking?
—Well，just as someone puts ________， smoking kills.
答案：it 解析：句意：——你怎样看待吸烟?——正如人们所说的那样，吸烟可以要人命。put it(说)，it用在不能直接跟宾语从句的动词或动词短语之后，作形式宾语。此类词还有：enjoy，dislike，like，hate，love，don't mind，be fond of，feel like，see to，appreciate等。
14.Although his excuse was as good as ________ other，I don't believe that was a fact.
答案：any 解析：句意：尽管他的借口几乎与其他的一样，但我认为那不是事实。此处any other意为“其他的”。
15.Singing with Sun Yang, the swimming champion, face to face is an unforgettable moment, ________ the little girl always treasures.
答案：one 解析：句意：和游泳冠军孙扬面对面地唱歌是一次难忘的时刻，那个小女孩永远珍惜那一刻。此处one是an unforgettable moment的同位语，后接定语从句the little girl always treasures。
