Generally, students’ inner motivation with high expectations from others ______ essential to their development.
A．isB．a(chǎn)reC．wasD．were
A
句意：一般認(rèn)為，其他人對(duì)學(xué)生高的期望是他們發(fā)展的必要的內(nèi)部動(dòng)機(jī)對(duì)。本句主語(yǔ)是“motivation”，所以謂語(yǔ)動(dòng)詞用單數(shù)，而且是一般情況所以用一般現(xiàn)在時(shí)。
【考點(diǎn)定位】考查主謂一致和時(shí)態(tài)。
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