Generally,students'innermotivationwithhighexpectationsf...

来源：语文精选馆 1.26W

Generally, students' inner motivation with high expectations from others ________ essential to their development.

A. is B. are

C. was D. were

A　句子的主语为students' inner motivation为单数概念，可排除B和D选项；根据句意可知句子讲的是客观事实情况，应用一般现在时，故*为A项。