题目：
(2013·江苏，21)Generally，students' inner motivation with high expectations from others________essential to their development.
A．is
B．are
C．was
D．were
答案：
答案：A
考查主谓一致和动词时态。主语为motivation，故谓语为单数；根据语境及generally可知，描述的为一般情况，故使用一般现在时态，选A。
(2013·江苏，21)Generally，students' inner motivation with high expectations from others________essential to their development.
A．is
B．are
C．was
D．were
答案：A
考查主谓一致和动词时态。主语为motivation，故谓语为单数；根据语境及generally可知，描述的为一般情况，故使用一般现在时态，选A。
