【题目】To join the club, you have to ________ buy a minimum of six books a year.
A.undertakeB.voteC.postponeD.evolve
在线课程【答案】A
【解析】
考查动词词义辨析。句意：要加入这个俱乐部，你必须保证每年至少买六本书。A. undertake承担，保证，同意；B. vote提议，选举，投票；C. postpone延缓，延迟；D. evolve演变，发展，进化。根据buy a minimum of six books a year可知此处表示保证每年至少买六本书。故选A项。