问题补充:
Since Shanghai won the right to host the World Expo, over half a million people have volunteered to in all the Shanghai Expo projects .
A. assist
B. apply
C. supply
D. provide
答案:
(答案→)A. assist
B. apply
C. supply
D. provide
解析:词义辨析。 A. assist帮助;参加 B. apply申请 C. 供给 D. 提供;规定。句意:自从上海赢得举办世博会的权利以来,超过一百万人义务参加了所有上海世博会的工程。故选A。