Ⅰ.语法填空
1．________ the universe began with the “big bang” has been widely accepted.
答案：That 句意：宇宙开始于“大爆炸”已被广泛接受。从句中意义完整，只需要引导词。
2．It has been proved ________ having a balanced diet helps to keep healthy.
答案：that 句意：据证明拥有一个均衡的饮食有助于保持健康。it为形式主语，后面从句为真正的主语，且从句意义完整。
3．(2015·北京，35改编)________we understand things has a lot to do with what we feel.
答案：How 句意：我们理解事情的方式与我们的感受有很大关系。由句意可知，填how，意为“如何，怎样。”
4．________ is a fact that English is being accepted as an international language.
答案：It 句意：英语正被接受成为国际性语言是一个事实。此处用it作形式主语，that从句为真正的主语。
5．________ made the parents proud was ________ their son had been admitted to a key university.
答案：What; that 第一个空用what引导主语从句，what在该从句中充当主语；was后为表语从句，该从句中不缺少任何成分，故用that引导，且不可省略。
