his research has contirbuted greatly ------our understanding

his research has contirbuted greatly ------our understanding The advent of the Web as a research tool has greatly expande Our school has changed greatly in the past several years. Our country has changed greatly since1976(改为一般疑问句） Our city has changed greatly in the last two years. _______our English teacher,our English has been greatly impr .During the past two decades,research has ________ our knowl Scientific research has a great influence on our society.16 His research has been of great importance.同义句 what is certain is that the internet has greatly changed our 说明理由 1.our city has changed greatly in the last three yearso Our city has changed greatly in the last three years同义句