appreciate用法一道选择题“We really appreciate the contribution the volunteer made（）the 2010 Expo”答案是to holding 怎么都看不懂……求详细解释……

appreciate用法一道选择题“We really appreciate the contribution the volunteer made（）the 2010 Expo”答案是to holding 怎么都看不懂……求详细解释…… appreciate的用法 appreciate的用法 we appreciate 还是 we are appreciate We appreciate your hard working appreciate 用法We appreciate your helping us.这里为什么用your?我知道appreciate后加动名词，但这里为什么用your不用you，your在句子中作什么成分？ 一道英语选择题（关于：why 的用法的..we are going camping.why ( ) with us?A:don't come B:not you comeC:not come D:not appreciate的用法以及常见词组 appreciate做欣赏时的用法 一道英语选择题：We friends since three years ago. We appreciate your helping us.这句话中your； helping；us 分别是作哪些成分?我没说清楚我的意思……我感到纳闷的是appreciate的用法不是appreciate doing sth.和appreciate sb.那么这个 your又算怎么回事？ 一道英语非谓语选择题I would appreciate ___it secret.A:you to keep B:that you would keep C:your keeping D:that you are keeping appreciate just appreciate what we have 什么意思 翻译∶We appreciate your desire to... we will definitely appreciate him/her 选择题一道 选择题一道