Generally,students'innermotivationwithhighexpectationsf...

问题详情：

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

A. is                                   B. are

C. was                                  D. were

【回答】

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。

知识点：主谓一致

题型：选择题