问题补充：
The judges highly praised the two movies in Venice Film Festival, are Chinese.
A. their directors
B. the directors of which
C. who’s directors
D. the directors of them
答案：
A. their directors
(答案→)B. the directors of which
C. who’s directors
D. the directors of them
解析：考查定语从句。因为前面为逗号，应用the directors of which/whose directors
例如： There are 50 students, most of whom are boys.
I have three books, two of which are new.
