问题
选择题
17．The movie is to deucate people about environmental problems ______ our planet.
A．threatened
B．being threatened
C．threatening
D．to be threatened
答案
答案：C
搜题请搜索小程序“爱下问搜题”
17．The movie is to deucate people about environmental problems ______ our planet.
A．threatened
B．being threatened
C．threatening
D．to be threatened
答案：C