It is believed that movies, also _______
题型：选择题
问题：
It is believed that movies, also ________ motion pictures, were introduced into China near the end of the 19th century.
A．to be called
B．to call
C．calling
D．called
It is believed that movies, also ________ motion pictures, were introduced into China near the end of the 19th century.
A．to be called
B．to call
C．calling
D．called