问题描述: her job is——————the customer A showed B to show C showing D shown 请说明理由 1个回答 分类:英语 2014-10-24 问题解答: 我来补答 应选B.to show因为不定式作表语时相当于名词,紧跟在连系动词的后面.这类句子的主语应当是不定时,或者某些抽象名词,如 goal、purpose、way、work、problem等. 展开全文阅读