应该是much effort 还是many efforts

应该是much effort 还是many efforts make all effort 还是efforts? put one‘s effort还是efforts effort可数不可数：my long-term effort 还是 efforts? 努力到底是用with effort 还是with efforts 是make no efforts还是 make no effort? effort的用法?是什么时候单数 什么时候复数?make great efforts to do 还是effrot? 是spare no effort to do还是spare no efforts to do? with efforts 和 with effort区别 英语翻译不遗余力做什么事情的英语说法是spare no effort to do 还是 spare no efforts 一个英语词组的疑惑,是to spare no efforts to do还是to spare no effort to so much 还是so many?