Thehard-workingpeasantsandtheirhappylife_____wesawinthecountrysidemadeawonderfulimpressiononus.
A./B.whoC.whichD.whom在线课程A
先行词是the hard-working peasants and their happy life，既有人又有物，关系代词只能用that，又因为在定语从句中作saw的宾语，故可以省略。不管题干有多长，抓住主要成分将其简化，减小难度。