(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
网友回答
(答案→)A. is
B. are
C. was
D. were
解析：
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。