Generally,students'innermotivationwithhighexpectationsf...

問題詳情：

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

A. is                                   B. are

C. was                                  D. were

【回答】

A　句子的主語為students' inner motivation為單數概念，可排除B和D選項；根據句意可知句子講的是客觀事實情況，應用一般現在時，故*為A項。

知識點：主謂一致

題型：選擇題