Ⅰ.单句语法填空
1．The lives of these people have finally been recorded ________(thank) to the effects of a Frenchman from Paris called Gin.(2016·四川，阅读C)
2．But rather I see it as an area of ________(free)．(2016·四川，阅读C)
3．I thought that I wanted to study Political Science with its focus ________ International Affairs.(2016·浙江，六选五)
4．Their ________ (expand) business became a large corporation in 1996.
