Ⅰ.单句语法填空
1．I really have no idea of why she turned down my ________ (invite) to my birthday party.
invitation [设空处应填入动词invite的名词形式invitation。]
2．Their foolish ________ (behave) results in destruction of natural landscapes and pollution of environment.
behavior [设空处应填入动词behave的名词形式behavior。]
3．She is not only a great dramatic ________ (act)，but she's also very kind and considerate.
actress [设空处应填入动词act的名词形式actress。]
4．There is no doubt that any ________ (solve) must be acceptable to all sides.
solution [设空处应填入动词solve的名词形式solution。]
5．He was about to sit for his ________ (enter) exam when he caught a bad cold.
entrance [设空处应填入动词enter的名词形式entrance。]
6．We need to work harder to remain ________ (compete) with other companies.
competitive [设空处应填入动词compete的形容词形式competitive。]
