Clair felt that it was a sweet victory by her neighbors.A. to be envied　　　B. being envied

问题补充：

Clair felt that it was a sweet victory by her neighbors.

A. to be envied

B. being envied

C. to envy

D. envying

答案：

(答案→)A. to be envied

B. being envied

C. to envy

D. envying

解析：这题考查不定式做主语的用法：句型是：It is/was+n./adj.+to do“做某事是…的”，it是形式主语，不定式是真正的主语。而且是被动含义，句意是：克莱尔觉得被邻居嫉妒是甜蜜的胜利。选A。