He was very rude to the Customs officer, _____ of course made things even worse.
A. who B. whom C. that D. which
China has hundreds of islands, _____ is Taiwan.
A. the largest of which B. of which largest
C. which the largest D. in which the largest
We travelled together as far as Chicago, _____ we said goodbye to each other.
A. which B. when C. why D. where
_____ was expected, he failed in the exam.
A. That B. As C. Which D. It
With the guide _______ the way, we finally got to the village which we were looking for
A. led B. leading C. to lead D. had led
请你以一名中学生的名义写一封100字左右的信，呼吁世界各国的中学生帮助拯救大熊猫（giant panda ）。信的主要内容如下：
（1）大熊猫是中国的稀有（rare）动物，也是世界稀有动物之一，为中国人民和世界人民所喜爱;
（2）大熊猫生长在山里，以某种竹子(bamboo)为主食。由于山林遭破坏，竹子被砍伐，大熊猫觅食越来越困难，正濒临灭绝；
（3）我国已建立数个自然保护区（conservation zone）以保护大熊猫，但需要更多的资金；
（4）我们热切需要一切关心爱护野生动物的人伸出援助之手，帮助保护大熊猫，使它们永远和人类生活在一起。
