I feel I must spare no efforts to do my

I feel I must spare no efforts to do my I feel I must spare no efforts to do my bit. i fell i must spare no efforts to do my bit意思 L must spare no efforts to do my bit 是spare no effort to do还是spare no efforts to do? spare no efforts in dong 与to do区别 一个英语词组的疑惑,是to spare no efforts to do还是to spare no effort to 英语翻译As a result,we must spare no efforts to take some measur 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 Do I need to do my homework now ? No,you____A.can not B.must We must spare no effort to do it. spare no efforts