improvement in 为什么还有一个improvement on sth?两者有什么区别?

improvement in 为什么还有一个improvement on sth?两者有什么区别? A little improvement in the keyboard makes the computer easier _______. 为什么填 to use Science and technology have ___A_____ in important ways to the improvement oA) attachedB) assistedC) contributedD) witnessed为什么不能选A? VOA里这句语法问题请解释.its sometimes superficial interest in spirituality and self-improvement.不是be interested in 为什么没ed. 英语翻译TRENDS IN GROUND IMPROVEMENT FOR DAM SAFETY 英语翻译are successful in previous skill improvement efforts there is considerable room for improvement in staff training.4624 improvement后加介词 in / on / of 有什么区别? The plan is still in its early stage ____there is room for improvement.A that B how C which D when 选什么为什么 为什么句子这里需要使用being句子是：The improvement in his health is being maintained.不是已经有系动词了么,直接用被动语态不就好了吗?The improvement in his health整个做主语.为什么要在这里使用being. The home improvement has taken what little there is _______my spare time.A.from B.in C.of D.atThe home improvement has taken what little there is _______my spare time.A.from B.in C.of D.at为什么选C不选B. 随着生活水平的提高 with the improvement in living standatd随着生活水平的提高with the improvement in living standatds这里的in可不可以用of呢? the last half of the nineteenth century ____ the improvement in the means of travela.has witnessedb.witnessed为什么选b不选a 为什么不可以用现在完成时 improvement是什么意思 home improvement only in this way can you hope to make improvement in the operating owing to the purpose of the improvement both in industry and in econmy.啥意思 一个英语动词的习题求解His decision __some improvement in the workA.affected B.awarded C.effected D.affirmed 很明确的告诉大家,这个题不选A,大家觉得选什么?为什么